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Hans D. Engels
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Solingen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Process for the preparation of zinc dithiocarbamates
Patent number
6,534,675
Issue date
Mar 18, 2003
Bayer Aktiengesellschaft
Rüdiger Schubart
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Vulcanization accelerators suitable for the introduction of polar s...
Patent number
6,140,427
Issue date
Oct 31, 2000
Bayer AG
Thomas Scholl
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Vulcanizable rubber compositions containing salts of partial carbox...
Patent number
5,416,167
Issue date
May 16, 1995
Bayer Aktiengesellschaft
Joachim Thormer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Stabilization of organic polyisocyanates
Patent number
5,175,349
Issue date
Dec 29, 1992
Bayer Aktiengesellschaft
Pramod Gupta
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Rubber vulcanizates having improved hysteresis behavior
Patent number
5,130,363
Issue date
Jul 14, 1992
Bayer Aktiengesellschaft
Thomas Scholl
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Rubber mixtures containing sulfur-modified polychloroprene gel
Patent number
5,124,408
Issue date
Jun 23, 1992
Bayer AG
Hans-Wilhelm Engels
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the production of bis-(dialkoxythio-phosphoryl)-trisulf...
Patent number
5,028,729
Issue date
Jul 2, 1991
Bayer Aktiengesellschaft
Rudiger Schubart
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Use of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid for stabiliz...
Patent number
5,006,599
Issue date
Apr 9, 1991
Bayer Aktiengesellschaft
Pramod Gupta
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Production of 3,3-dimethyl-2-oxo-butyric acid salt
Patent number
4,898,974
Issue date
Feb 6, 1990
Bayer Aktiengesellschaft
Karlfried Dickore
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Rubber compositions modified with heterocyclic di-N-oxides
Patent number
4,822,845
Issue date
Apr 18, 1989
The Firestone Tire & Rubber & Company
Daniel F. Graves
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Rubber compositions modified with hydroxy-benz-imidazole oxides
Patent number
4,762,870
Issue date
Aug 9, 1988
The Firestone Tire & Rubber Company
Daniel F. Graves
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Rubber compositions modified with benzimidazo-linones
Patent number
4,761,446
Issue date
Aug 2, 1988
The Firestone Tire & Rubber Company
Daniel F. Graves
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Production of 3,3-dimethyl-2-oxo-butyric acid salt
Patent number
4,564,704
Issue date
Jan 14, 1986
Bayer Aktiengesellschaft
Karlfried Dickore
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Process for the preparation of zinc dithiocarbamates
Publication number
20010039339
Publication date
Nov 8, 2001
Rudiger Schubart
C07 - ORGANIC CHEMISTRY