Heinrich Frolich

Person

Kelkheim, DE

People

Patents Grantslast 30 patents

Information Patent Grant
.beta.-modified crystalline fed monoazo pigment
- Patent number 5,128,454
- Issue date Jul 7, 1992
- Hoechst Aktiengesellschaft
- Heinrich Frolich
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Bisdiazonium salts of 4,4'-diamino-3,3'-dialkoxybiphenyls and a pro...
- Patent number 4,987,221
- Issue date Jan 22, 1991
- Hoechst Aktiengesellschaft
- Hasso Hertel
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
4,4'-diaminodiphenyl compounds, process for their preparation and t...
- Patent number 4,987,258
- Issue date Jan 22, 1991
- Hoechst Aktiengesellschaft
- Klaus Hunger
Information Patent Grant
Process for preparing water-insoluble blue azo dyes on the fiber: h...
- Patent number 4,696,675
- Issue date Sep 29, 1987
- Hoechst Aktiengesellschaft
- Hasso Hertel
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Diaryl pigments with improved heat stability obtained by coupling b...
- Patent number 4,665,163
- Issue date May 12, 1987
- Hoechst Aktiengesellschaft
- Klaus Hunger
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Pigments of mixtures of methoxynitrobenzene-azo-methoxy-acetanilides
- Patent number 4,251,441
- Issue date Feb 17, 1981
- Hoechst Aktiengesellschaft
- Heinrich Frolich
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water-insoluble yellow terephthalate-azo-acetoacetylamido-benzimida...
- Patent number 4,150,019
- Issue date Apr 17, 1979
- Hoechst Aktiengesellschaft
- Heinrich Frolich
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Heinrich Frolich

Person

Patents Grantslast 30 patents

.beta.-modified crystalline fed monoazo pigment

Bisdiazonium salts of 4,4'-diamino-3,3'-dialkoxybiphenyls and a pro...

4,4'-diaminodiphenyl compounds, process for their preparation and t...

Process for preparing water-insoluble blue azo dyes on the fiber: h...

Diaryl pigments with improved heat stability obtained by coupling b...

Pigments of mixtures of methoxynitrobenzene-azo-methoxy-acetanilides

Water-insoluble yellow terephthalate-azo-acetoacetylamido-benzimida...