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Norbert Weimann
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Leverkusen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Microcapsules
Patent number
5,236,782
Issue date
Aug 17, 1993
Bayer Aktiengesellschaft
Gunter Klug
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Foamed microbeads and a process for their preparation
Patent number
4,882,362
Issue date
Nov 21, 1989
Bayer Aktiengesellschaft
Norbert Weimann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Foamed microbeads and a process for their preparation
Patent number
4,804,687
Issue date
Feb 14, 1989
Bayer Aktiengesellschaft
Norbert Weimann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Microcapsules having walls of polyaddition products of water-insolu...
Patent number
4,592,957
Issue date
Jun 3, 1986
Bayer Aktiengesellschaft
Manfred Dahm
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Production of microcapsules having walls of polyaddition products o...
Patent number
4,517,141
Issue date
May 14, 1985
Bayer Aktiengesellschaft
Manfred Dahm
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Process for the production of microcapsules
Patent number
4,428,983
Issue date
Jan 31, 1984
Bayer Aktiengesellschaft
Ulrich Nehen
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Copying systems, a process for their production, and suitable print...
Patent number
4,404,251
Issue date
Sep 13, 1983
Bayer Aktiengesellschaft
Gert Jabs
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Isocyanate adduct diols
Patent number
4,211,699
Issue date
Jul 8, 1980
Bayer Aktiengesellschaft
Hans D. Winkelmann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Self-crosslinkable polyurethanes
Patent number
4,153,775
Issue date
May 8, 1979
Bayer Aktiengesellschaft
Hans D. Winkelmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...