Helmut Herzog

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Bergisch-Neukirchen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of 6,13-dihydroquinacridones and quinac...
- Patent number 4,812,568
- Issue date Mar 14, 1989
- Bayer Aktiengesellschaft
- Helmut Herzog
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 1,5-dichloroanthraquinone
- Patent number 4,206,130
- Issue date Jun 3, 1980
- Bayer Aktiengesellschaft
- Helmut Herzog
Information Patent Grant
Nitroanthraquinones
- Patent number 4,104,284
- Issue date Aug 1, 1978
- Bayer Aktiengesellschaft
- Walter Hohmann
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...