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Heinz Litterer
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Wiesbaden, DE
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last 30 patents
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Patent Grant
Process for the preparation of the non-toxic salts of 6-methyl-3,4-...
Patent number
5,744,010
Issue date
Apr 28, 1998
Hoechst Aktiengesellschaft
Gunter Roscher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of fluorobenzenes
Patent number
5,264,094
Issue date
Nov 23, 1993
Hoechst Aktiengesellschaft
Frank P. Sistig
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of thiophene derivatives
Patent number
5,100,520
Issue date
Mar 31, 1992
Hoechst Aktiengesellschaft
Steffen Dapperheld
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Process for the preparation of fluorobenzenes
Patent number
4,937,395
Issue date
Jun 26, 1990
Hoechst Aktiengesellschaft
Heinz Litterer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of thiophene ethers
Patent number
4,931,568
Issue date
Jun 5, 1990
Hoechst Aktiengesellschaft
Peter Wegener
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing p-chlorotoluene and/or m-chlorotoluene
Patent number
4,650,915
Issue date
Mar 17, 1987
Hoechst Aktiengesellschaft
Hans-Jurgen Arpe
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Aluminosilicates and silica gels having a low content of transition...
Patent number
4,605,809
Issue date
Aug 12, 1986
Hoechst Aktiengesellschaft
Heinz Litterer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the manufacture of o-toluidine and/or m-toluidine and/o...
Patent number
4,554,380
Issue date
Nov 19, 1985
Hoechst Aktiengesellschaft
Hans-Jurgen Arpe
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of a crystalline aluminosilicate zeolite
Patent number
4,522,800
Issue date
Jun 11, 1985
Hoechst Aktiengesellschaft
Herbert Baltes
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the isolation of crystalline 1,3-cylohexanedione
Patent number
4,487,971
Issue date
Dec 11, 1984
Hoechst Aktiengesellschaft
Heinz Litterer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the synthesis of lower olefins from methanol and/or dim...
Patent number
4,481,376
Issue date
Nov 6, 1984
Hoechst Aktiengesellschaft
Friedrich Wunder
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the manufacture of o-toluidine and/or m-toluidine and/o...
Patent number
4,480,128
Issue date
Oct 30, 1984
Hoechst Aktiengesellschaft
Hans-J/u/ rgen Arpe
C07 - ORGANIC CHEMISTRY