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Alfons Klein
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Duesseldorf, DT
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last 30 patents
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Patent Grant
Color photographic material containing a hydroxyindane
Patent number
4,052,216
Issue date
Oct 4, 1977
AGFA-Gevaert, A.G.
Johannes Sobel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1,1,3,3-substituted hydroxy indanes
Patent number
4,045,499
Issue date
Aug 30, 1977
Bayer Aktiengesellschaft
Alfons Klein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Recording materials and image receiving materials for producing cop...
Patent number
4,013,473
Issue date
Mar 22, 1977
Agfa-Gevaert N.V.
Jozef Frans Willems
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 5-isopropyl-3-methyl-phenol
Patent number
3,968,173
Issue date
Jul 6, 1976
Bayer Aktiengesellschaft
Alfons Klein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of 1,1,3,3-substituted hydroxyindanes
Patent number
3,954,889
Issue date
May 4, 1976
Bayer Aktiengesellschaft
Alfons Klein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photographic silver halide material which contains color couplers
Patent number
3,941,601
Issue date
Mar 2, 1976
AGFA-Gevaert, A.G.
Willibald Pelz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY