Klaus-Friedrich Lehment

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Odenthal, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of cationic methine dyestuffs
- Patent number 4,542,223
- Issue date Sep 17, 1985
- Bayer Aktiengesellschaft
- Roderich Raue
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of styryl dyestuffs
- Patent number 4,439,372
- Issue date Mar 27, 1984
- Bayer Aktiengesellschaft
- Herbert Hugl
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of cationic dyestuffs
- Patent number 4,281,112
- Issue date Jul 28, 1981
- Bayer Aktiengesellschaft
- Klaus-Friedrich Lehment
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Preparation of dichlorophene
- Patent number 4,127,735
- Issue date Nov 28, 1978
- Bayer Aktiengesellschaft
- Adolf Staffe
- C07 - ORGANIC CHEMISTRY