Herbert Friedrich

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Heusenstamm, DE

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Patents Grantslast 30 patents

Information Patent Grant
Copolymers based on ethylenically unsaturated dicarboxylic anhydrid...
- Patent number 5,534,604
- Issue date Jul 9, 1996
- Hoechst
- Michael Bildhauer
- C14 - SKINS HIDES PELTS LEATHER
Information Patent Grant
Salts of copolymers of ethylenically unsaturated carboxylic acids a...
- Patent number 5,504,162
- Issue date Apr 2, 1996
- Hoechst Aktiengesellschaft
- Herbert Friedrich
- C14 - SKINS HIDES PELTS LEATHER
Information Patent Grant
Mixtures of optical brighteners and their use
- Patent number 4,447,350
- Issue date May 8, 1984
- Hoechst Aktiengesellschaft
- Thomas Martini
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Formulation for brightening synthetic fibers and its preparation an...
- Patent number 4,304,569
- Issue date Dec 8, 1981
- Cassella AG.
- Friedrich Engelhardt
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...