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Hans-Dieter Ruprecht
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Cologne, DE
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Patents Grants
last 30 patents
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Patent Grant
Process for preparing oligomeric aliphatic diols, polycarbonatediol...
Patent number
6,977,290
Issue date
Dec 20, 2005
Bayer Aktiengesellschaft
Hartmut Nefzger
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
N,N′-disubstituted N-(2-hydroxyalkyl)-ureas
Patent number
6,177,494
Issue date
Jan 23, 2001
Bayer Aktiengesellschaft
Richard Kopp
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of polysiloxane ionomers, polysiloxane i...
Patent number
4,758,601
Issue date
Jul 19, 1988
Bayer Aktiengesellschaft
Peter Haas
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Use of liquid, cold-hardening polyurethane-urea-forming components...
Patent number
4,716,210
Issue date
Dec 29, 1987
Bayer Aktiengesellschaft
Gerhard Trummelmeyer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the production of elastic, optionally cellular, polyure...
Patent number
4,294,934
Issue date
Oct 13, 1981
Bayer Aktiengesellschaft
Gerhard Grogler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
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Patent Application
Process for preparing oligomeric aliphatic diols, polycarbonatediol...
Publication number
20040152861
Publication date
Aug 5, 2004
Hartmut Nefzger
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...