MD3917C2 - Procedeu de prelucrare termochimică a materiei prime ce conţine carbon - Google Patents
Procedeu de prelucrare termochimică a materiei prime ce conţine carbonInfo
- Publication number
- MD3917C2 MD3917C2 MDA20060230A MD20060230A MD3917C2 MD 3917 C2 MD3917 C2 MD 3917C2 MD A20060230 A MDA20060230 A MD A20060230A MD 20060230 A MD20060230 A MD 20060230A MD 3917 C2 MD3917 C2 MD 3917C2
- Authority
- MD
- Moldova
- Prior art keywords
- raw material
- reactor
- gas
- product
- processing
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
- C10B1/04—Vertical retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
- C10J2300/1637—Char combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Invenţia se referă la tehnologia chimică a combustibililor, în particular la procedeele de prelucrare a materiei prime ce conţine carbon, inclusiv a deşeurilor menajere, prin piroliza şi gazificarea componentei organice a materiei prime, şi poate fi aplicată în industriile chimică, a combustibililor şi energetică.Procedeul de prelucrare termochimică a materiei prime ce conţine carbon include încărcarea materiei prime în camera de uscat ermetică; reîncărcarea materiei prime uscate în reactorul de tip mină; formarea în reactor a unei coloane de materie primă permeabilă la gaze; iniţierea arderii materiei prime în partea de fund a reactorului, în care materia primă se află consecutiv în zonele de încălzire-uscare completă, piroliză, cocsificare, ardere-gazificare şi răcire; instalarea fluxului de abur şi gaz prin materia primă prin debitarea agentului ce conţine oxigen - aerului şi vaporilor de apă în zona de răcire; evacuarea din partea superioară a reactorului a produselor gazoase şi lichide ale prelucrării sub formă de produs-gaz, iar din partea de fund - a produselor solide ale prelucrării; reglarea volumului şi vitezei insuflării aerului cu abur şi/sau volumului şi vitezei evacuării produsului-gaz şi/sau cantităţii de produse solide descărcate ale prelucrării şi/sau cantităţii de materie primă încărcată în reactor pentru menţinerea temperaturii în zona de ardere de 900…1200°C, în zona de cocsificare de 850…950°C, în zona de piroliză de 550…600°C,a temperaturii produsului-gaz evacuat din reactor de300…350°C. Totodată, la debitarea din reactor a produsului-gaz în camera de uscat materia primă se încălzeşte până la temperatura de 200…300°C, iar produsul-gaz se evacuează din camera de uscat la temperatura de 150…200°C.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MDA20060230A MD3917C2 (ro) | 2006-09-20 | 2006-09-20 | Procedeu de prelucrare termochimică a materiei prime ce conţine carbon |
DE112007002834T DE112007002834A5 (de) | 2006-09-20 | 2007-09-18 | Verfahren zur thermochemischen Verarbeitung von kohlenstoffhaltigen Rohstoffen |
PCT/DE2007/001681 WO2008034424A1 (de) | 2006-09-20 | 2007-09-18 | Verfahren zur thermochemischen verarbeitung von kohlenstoffhaltigen rohstoffen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MDA20060230A MD3917C2 (ro) | 2006-09-20 | 2006-09-20 | Procedeu de prelucrare termochimică a materiei prime ce conţine carbon |
Publications (3)
Publication Number | Publication Date |
---|---|
MD20060230A MD20060230A (ro) | 2008-07-31 |
MD3917B2 MD3917B2 (ro) | 2009-05-31 |
MD3917C2 true MD3917C2 (ro) | 2009-12-31 |
Family
ID=39043187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MDA20060230A MD3917C2 (ro) | 2006-09-20 | 2006-09-20 | Procedeu de prelucrare termochimică a materiei prime ce conţine carbon |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE112007002834A5 (ro) |
MD (1) | MD3917C2 (ro) |
WO (1) | WO2008034424A1 (ro) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MD192Z (ro) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de prelucrare termochimică a pieselor din oţel |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008032957A1 (de) * | 2008-07-12 | 2010-01-14 | Dinano Ecotechnology Llc | Verfahren zur Gewinnung von synthetischem Diesel |
US7998316B2 (en) | 2009-03-17 | 2011-08-16 | Suncoke Technology And Development Corp. | Flat push coke wet quenching apparatus and process |
US9200225B2 (en) | 2010-08-03 | 2015-12-01 | Suncoke Technology And Development Llc. | Method and apparatus for compacting coal for a coal coking process |
RU2495076C1 (ru) * | 2012-07-25 | 2013-10-10 | Закрытое Акционерное Общество Научно-Производственная Компания "Интергаз" | Способ переработки горючих углерод- и/или углеводородсодержащих продуктов, реактор для его осуществления (варианты) и установка для переработки горючих углерод- и/или углеводородсодержащих продуктов |
CA2880539C (en) | 2012-07-31 | 2018-09-11 | Suncoke Technology And Development Llc | Methods for handling coal processing emissions and associated systems and devices |
US9359554B2 (en) | 2012-08-17 | 2016-06-07 | Suncoke Technology And Development Llc | Automatic draft control system for coke plants |
US9243186B2 (en) | 2012-08-17 | 2016-01-26 | Suncoke Technology And Development Llc. | Coke plant including exhaust gas sharing |
US9249357B2 (en) | 2012-08-17 | 2016-02-02 | Suncoke Technology And Development Llc. | Method and apparatus for volatile matter sharing in stamp-charged coke ovens |
US9169439B2 (en) * | 2012-08-29 | 2015-10-27 | Suncoke Technology And Development Llc | Method and apparatus for testing coal coking properties |
US9193913B2 (en) | 2012-09-21 | 2015-11-24 | Suncoke Technology And Development Llc | Reduced output rate coke oven operation with gas sharing providing extended process cycle |
US9238778B2 (en) | 2012-12-28 | 2016-01-19 | Suncoke Technology And Development Llc. | Systems and methods for improving quenched coke recovery |
US10047295B2 (en) | 2012-12-28 | 2018-08-14 | Suncoke Technology And Development Llc | Non-perpendicular connections between coke oven uptakes and a hot common tunnel, and associated systems and methods |
US9476547B2 (en) | 2012-12-28 | 2016-10-25 | Suncoke Technology And Development Llc | Exhaust flow modifier, duct intersection incorporating the same, and methods therefor |
CA2896475C (en) | 2012-12-28 | 2020-03-31 | Suncoke Technology And Development Llc. | Systems and methods for removing mercury from emissions |
US10883051B2 (en) | 2012-12-28 | 2021-01-05 | Suncoke Technology And Development Llc | Methods and systems for improved coke quenching |
US9273249B2 (en) | 2012-12-28 | 2016-03-01 | Suncoke Technology And Development Llc. | Systems and methods for controlling air distribution in a coke oven |
CA2896478C (en) | 2012-12-28 | 2016-06-07 | Suncoke Technology And Development Llc. | Vent stack lids and associated systems and methods |
WO2014105063A1 (en) | 2012-12-28 | 2014-07-03 | Suncoke Technology And Development Llc. | Systems and methods for maintaining a hot car in a coke plant |
RU2525558C1 (ru) * | 2013-03-06 | 2014-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | Способ порционной термической переработки несортированных твердых бытовых отходов на полигоне |
US9193915B2 (en) | 2013-03-14 | 2015-11-24 | Suncoke Technology And Development Llc. | Horizontal heat recovery coke ovens having monolith crowns |
US9273250B2 (en) | 2013-03-15 | 2016-03-01 | Suncoke Technology And Development Llc. | Methods and systems for improved quench tower design |
RU2536896C1 (ru) * | 2013-09-19 | 2014-12-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | Переносная установка для термической переработки твердых бытовых отходов на полигоне |
US10619101B2 (en) | 2013-12-31 | 2020-04-14 | Suncoke Technology And Development Llc | Methods for decarbonizing coking ovens, and associated systems and devices |
RU2544669C1 (ru) * | 2014-02-03 | 2015-03-20 | Закрытое Акционерное Общество Научно-Производственная Компания "Интергаз" | Способ переработки горючих углерод- и/или углеводородсодержащих продуктов и реактор для его осуществления |
US10526541B2 (en) | 2014-06-30 | 2020-01-07 | Suncoke Technology And Development Llc | Horizontal heat recovery coke ovens having monolith crowns |
PL3186336T3 (pl) | 2014-08-28 | 2021-05-31 | Suncoke Technology And Development Llc | Sposób i system optymalizacji obsługi i wydajności instalacji koksowniczej |
BR112017004981B1 (pt) | 2014-09-15 | 2021-05-11 | Suncoke Technology And Development Llc | câmara de forno de coque |
BR112017014186A2 (pt) | 2014-12-31 | 2018-01-09 | Suncoke Tech & Development Llc | leitos multimodais de material de coque |
CA2973243C (en) | 2015-01-02 | 2022-07-19 | Suncoke Technology And Development Llc | Integrated coke plant automation and optimization using advanced control and optimization techniques |
US11060032B2 (en) | 2015-01-02 | 2021-07-13 | Suncoke Technology And Development Llc | Integrated coke plant automation and optimization using advanced control and optimization techniques |
JP6945535B2 (ja) | 2015-12-28 | 2021-10-06 | サンコーク テクノロジー アンド ディベロップメント リミテッド ライアビリティ カンパニー | コークス炉に動的に装入するための方法およびシステム |
BR112018074924A2 (pt) | 2016-06-03 | 2019-03-12 | Suncoke Technology And Development Llc | métodos e sistemas para gerar automaticamente uma ação corretiva em uma instalação industrial |
AU2018273894A1 (en) | 2017-05-23 | 2019-12-19 | Suncoke Technology And Development Llc | System and method for repairing a coke oven |
RU2704177C1 (ru) * | 2018-12-10 | 2019-10-24 | Григорий Михайлович Золотарев | Пиролизный реактор |
US11261381B2 (en) | 2018-12-28 | 2022-03-01 | Suncoke Technology And Development Llc | Heat recovery oven foundation |
CA3125337C (en) | 2018-12-28 | 2022-06-21 | Suncoke Technology And Development Llc | Particulate detection for industrial facilities, and associated systems and methods |
WO2020140074A1 (en) | 2018-12-28 | 2020-07-02 | Suncoke Technology And Development Llc | Improved oven uptakes |
BR112021012766B1 (pt) | 2018-12-28 | 2023-10-31 | Suncoke Technology And Development Llc | Descarbonização de fornos de coque e sistemas e métodos associados |
US11008518B2 (en) | 2018-12-28 | 2021-05-18 | Suncoke Technology And Development Llc | Coke plant tunnel repair and flexible joints |
CA3125340C (en) | 2018-12-28 | 2022-04-26 | Suncoke Technology And Development Llc | Spring-loaded heat recovery oven system and method |
US11395989B2 (en) | 2018-12-31 | 2022-07-26 | Suncoke Technology And Development Llc | Methods and systems for providing corrosion resistant surfaces in contaminant treatment systems |
WO2020142389A1 (en) | 2018-12-31 | 2020-07-09 | Suncoke Technology And Development Llc | Improved systems and methods for utilizing flue gas |
CA3177017C (en) | 2020-05-03 | 2024-04-16 | John Francis Quanci | High-quality coke products |
CN117120581A (zh) | 2021-11-04 | 2023-11-24 | 太阳焦炭科技和发展有限责任公司 | 铸造焦炭产品以及相关系统、装置和方法 |
US11946108B2 (en) | 2021-11-04 | 2024-04-02 | Suncoke Technology And Development Llc | Foundry coke products and associated processing methods via cupolas |
CN115143473B (zh) * | 2022-09-02 | 2023-02-24 | 臣功环境科技有限公司 | 一种生活垃圾高温干馏碳化焚烧装置 |
US20240150659A1 (en) | 2022-11-04 | 2024-05-09 | Suncoke Technology And Development Llc | Coal blends, foundry coke products, and associated systems, devices, and methods |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0498014A1 (de) * | 1991-02-07 | 1992-08-12 | MARTIN GmbH für Umwelt- und Energietechnik | Verfahren zur Verbrennungsluftzuführung und Feuerungsanlage |
FR2704047A1 (fr) * | 1993-04-16 | 1994-10-21 | Electricite De France | Dispositif de traitement et de vitrification de déchets. |
RU2079051C1 (ru) * | 1994-06-23 | 1997-05-10 | Институт химической физики в Черноголовке РАН | Способ переработки твердых бытовых отходов |
RU2152561C1 (ru) * | 1998-01-22 | 2000-07-10 | Институт проблем химической физики РАН | Способ переработки конденсированных горючих |
MD3193C2 (ro) * | 2004-11-23 | 2007-06-30 | ДИНТОВ Валерий | Procedeu de gazificare termochimică a materiei prime ce conţine carbon |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2610087B1 (fr) * | 1987-01-22 | 1989-11-24 | Aerospatiale | Procede et dispositif pour la destruction de dechets solides par pyrolyse |
TW497997B (en) * | 2000-10-05 | 2002-08-11 | E E R Env Energy Resrc Israel | System and method for decongesting a waste converting apparatus |
DE10226862B3 (de) * | 2002-06-15 | 2004-01-29 | Gesellschaft für Nachhaltige Stoffnutzung mbH | Verfahren und Vorrichtung zur Erzeugung eines Brenngases aus Biomassen |
-
2006
- 2006-09-20 MD MDA20060230A patent/MD3917C2/ro not_active IP Right Cessation
-
2007
- 2007-09-18 WO PCT/DE2007/001681 patent/WO2008034424A1/de active Application Filing
- 2007-09-18 DE DE112007002834T patent/DE112007002834A5/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0498014A1 (de) * | 1991-02-07 | 1992-08-12 | MARTIN GmbH für Umwelt- und Energietechnik | Verfahren zur Verbrennungsluftzuführung und Feuerungsanlage |
FR2704047A1 (fr) * | 1993-04-16 | 1994-10-21 | Electricite De France | Dispositif de traitement et de vitrification de déchets. |
RU2079051C1 (ru) * | 1994-06-23 | 1997-05-10 | Институт химической физики в Черноголовке РАН | Способ переработки твердых бытовых отходов |
RU2152561C1 (ru) * | 1998-01-22 | 2000-07-10 | Институт проблем химической физики РАН | Способ переработки конденсированных горючих |
MD3193C2 (ro) * | 2004-11-23 | 2007-06-30 | ДИНТОВ Валерий | Procedeu de gazificare termochimică a materiei prime ce conţine carbon |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MD192Z (ro) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de prelucrare termochimică a pieselor din oţel |
Also Published As
Publication number | Publication date |
---|---|
MD20060230A (ro) | 2008-07-31 |
MD3917B2 (ro) | 2009-05-31 |
DE112007002834A5 (de) | 2009-09-03 |
WO2008034424A1 (de) | 2008-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MD3917C2 (ro) | Procedeu de prelucrare termochimică a materiei prime ce conţine carbon | |
MY167884A (en) | Microwave plasma biomass gasifying fixed bed gasifier and process | |
WO2009136072A3 (fr) | Gazeification de materiaux organiques combustibles | |
RU2544669C1 (ru) | Способ переработки горючих углерод- и/или углеводородсодержащих продуктов и реактор для его осуществления | |
CN104773731A (zh) | 一种利用多膛炉制备活性炭的方法 | |
EP2789677A1 (en) | Torrefaction plant, its operation and maintenance | |
RU2380395C1 (ru) | Способ пиролизной переработки биомассы с получением высококалорийных газообразного и жидкого топлив и углеродных материалов | |
RU2347139C1 (ru) | Способ газификации конденсированных топлив и устройство для его осуществления | |
RU2385343C1 (ru) | Способ переработки углерод- и/или углеводородсодержащих продуктов и реактор для его осуществления | |
WO2016046699A1 (en) | Gasifier and gasification method | |
CN103619995B (zh) | 用于木屑或废弃物和其它碳化有机材料的连续碳化的装置和方法 | |
RU2673052C1 (ru) | Способ переработки угля и устройство для его осуществления | |
RU88669U1 (ru) | Установка для производства древесного угля | |
RU2359007C1 (ru) | Способ получения углеводородного топлива, технического водорода и углеродных материалов из биомассы | |
RU2278817C1 (ru) | Способ получения полукокса и устройство для осуществления способа | |
MD3193C2 (ro) | Procedeu de gazificare termochimică a materiei prime ce conţine carbon | |
CN105668542A (zh) | 一种高效率生产竹炭的节能窑炉 | |
RU220055U1 (ru) | Многостадийный газогенератор комбинированного дутья | |
RU2312123C2 (ru) | Способ и установка для получения древесного угля | |
RU2433158C2 (ru) | Способ и устройство утилизации углеродосодержащих отходов пиролизом | |
RU2657042C2 (ru) | Способ получения из твердого топлива горючего газа и реактор для его осуществления | |
CN203112763U (zh) | 外筒空气气化协同内筒水蒸气气化制备合成气的设备 | |
RU223489U1 (ru) | Устройство для получения пироуглерода | |
US2966865A (en) | Disposal of effluent | |
UA138572U (uk) | Спосіб отримання енергетичного синтез-газу |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG4A | Patent for invention issued | ||
KA4A | Patent for invention lapsed due to non-payment of fees (with right of restoration) | ||
MM4A | Patent for invention definitely lapsed due to non-payment of fees |