Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
  • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
  • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J17/00—Gas-filled discharge tubes with solid cathode
  • H01J17/02—Details
  • H01J17/04—Electrodes; Screens
  • H01J17/06—Cathodes
  • H01J17/066—Cold cathodes
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J2893/00—Discharge tubes and lamps
  • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
  • H01J2893/0065—Electrode systems
  • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
• • 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
  • Y02P20/141—Feedstock

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=11175595

Family Applications (1)

Country Status (15)

Families Citing this family (7)

• 1968
  • 1968-06-21 DK DK296968AA patent/DK118396B/en unknown
  • 1968-06-21 NO NO2461/68A patent/NO145949C/en unknown
  • 1968-06-21 AT AT598768A patent/AT290545B/en not_active IP Right Cessation
  • 1968-06-25 NL NL6808895.A patent/NL161137C/en not_active IP Right Cessation
  • 1968-06-27 GB GB30814/68A patent/GB1184004A/en not_active Expired
  • 1968-06-28 DE DE19681768776 patent/DE1768776B2/en not_active Ceased
  • 1968-06-28 SE SE6808922A patent/SE373574B/en unknown
  • 1968-07-08 JP JP4720368A patent/JPS5432767B1/ja active Pending
  • 1968-07-25 IE IE894/68A patent/IE32209B1/en unknown
  • 1968-08-01 LU LU56630D patent/LU56630A1/xx unknown
  • 1968-08-02 BE BE719035D patent/BE719035A/xx not_active IP Right Cessation
  • 1968-08-02 FR FR1576811D patent/FR1576811A/fr not_active Expired
  • 1968-08-03 CH CH1166268A patent/CH487855A/en not_active IP Right Cessation
  • 1968-09-16 CS CS686495A patent/CS155191B2/en unknown
  • 1968-09-25 ES ES358855A patent/ES358855A1/en not_active Expired

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