FI900126A0 - Process for the preparation of calcium sulphate hemihydrate - Google Patents

Process for the preparation of calcium sulphate hemihydrate

Info

Publication number: FI900126A0
Authority: FI; Finland
Prior art keywords: preparation; calcium sulphate; sulphate hemihydrate; hemihydrate; calcium
Prior art date: 1988-05-14

Application number

FI900126A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI93943C (en

FI93943B (en

FI900126A (en

Inventor

Thomas Koslowski

Original Assignee

Rhein Westfael Elect Werk Ag

Sicowa Verfahrenstech

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-05-14

Filing date

1990-01-10

Publication date

1990-01-10

1988-05-14 Priority claimed from DE3816513A external-priority patent/DE3816513C3/en

1988-12-15 Priority claimed from EP88120944A external-priority patent/EP0342272B1/en

1989-05-10 Priority claimed from PCT/EP1989/000512 external-priority patent/WO1989010905A1/en

1990-01-10 Application filed by Rhein Westfael Elect Werk Ag, Sicowa Verfahrenstech filed Critical Rhein Westfael Elect Werk Ag

1990-01-10 Publication of FI900126A0 publication Critical patent/FI900126A0/en

1990-01-10 Publication of FI900126A publication Critical patent/FI900126A/en

1995-03-15 Application granted granted Critical

1995-03-15 Publication of FI93943B publication Critical patent/FI93943B/en

1995-06-26 Publication of FI93943C publication Critical patent/FI93943C/en

Links

FI900126A 1988-05-14 1990-01-10 Process for the preparation of calcium sulphate-hemihydrate FI93943C (en)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
DE3816513A DE3816513C3 (en)	1987-05-22	1988-05-14	Process for producing calcium sulfate alpha hemihydrate from finely divided calcium sulfate and its use
DE3816513		1988-05-14
EP88120944A EP0342272B1 (en)	1987-05-22	1988-12-15	Process for the treatment of alpha-calciumsulphate-hemihydrate
EP88120944		1988-12-15
EP8900512		1989-05-10
PCT/EP1989/000512 WO1989010905A1 (en)	1987-05-22	1989-05-10	Process for preparing calcium sulphate alpha hemihydrate

Publications (4)

Publication Number	Publication Date
FI900126A0 true FI900126A0 (en)	1990-01-10
FI900126A FI900126A (en)	1990-01-10
FI93943B FI93943B (en)	1995-03-15
FI93943C FI93943C (en)	1995-06-26

Family

ID=25868102

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI900126A FI93943C (en)	1988-05-14	1990-01-10	Process for the preparation of calcium sulphate-hemihydrate

Country Status (5)

Country	Link
JP (1)	JPH03500877A (en)
AT (1)	ATE62648T1 (en)
CA (1)	CA1338921C (en)
DK (1)	DK9090A (en)
FI (1)	FI93943C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6964704B2 (en) *	2003-03-20	2005-11-15	G.B. Technologies, Llc	Calcium sulphate-based composition and methods of making same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2457970C3 (en) *	1973-12-11	1978-03-09	Union Carbide Corp., New York, N.Y. (V.St.A.)	Process for the production of carbon fibers
JPS51112798A (en) *	1975-03-31	1976-10-05	Babcock Hitachi Kk	Process for granulation of by-product gypsum from exhausted gas desulf urizer
US4065320A (en) *	1975-05-13	1977-12-27	Allis-Chalmers Corporation	System for handling high sulfur materials
JPS5614616A (en) *	1979-07-16	1981-02-12	Roozan Eng Corp	Self seal type flange device
JPS5618551A (en) *	1979-07-26	1981-02-21	Morinaga & Co Ltd	Preparation of multilayered ice cream
JPS573622A (en) *	1980-06-10	1982-01-09	Tokyo Optical	Apparatus for detecting operation distance in ophthalmology
JPS5721501A (en) *	1980-07-14	1982-02-04	Reonitsuto Kk	Shorts and production thereof
JPS5814385A (en) *	1981-07-20	1983-01-27	Toshiba Corp	Digital disc player

1988
- 1988-12-15 AT AT88120944T patent/ATE62648T1/en not_active IP Right Cessation
1989
- 1989-05-10 JP JP50545389A patent/JPH03500877A/en active Pending
- 1989-05-15 CA CA 600321 patent/CA1338921C/en not_active Expired - Fee Related
1990
- 1990-01-10 FI FI900126A patent/FI93943C/en not_active IP Right Cessation
- 1990-01-12 DK DK009090A patent/DK9090A/en unknown

Also Published As

Publication number	Publication date
CA1338921C (en)	1997-02-25
ATE62648T1 (en)	1991-05-15
DK9090D0 (en)	1990-01-12
JPH03500877A (en)	1991-02-28
FI93943C (en)	1995-06-26
FI93943B (en)	1995-03-15
DK9090A (en)	1990-03-12
FI900126A (en)	1990-01-10

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Legal Events

Date

Code

Title

Description

1995-02-16

BB

Publication of examined application

1996-12-17

MM

Patent lapsed

2004-08-31

MM

Patent lapsed

Owner name: SICOWA VERFAHRENSTECHNIK FUER BAUSTOFFE

Owner name: PRO MINERAL GESELLSCHAFT ZUR VERWENDUNG