Frank Prokschy

Person

Frankfurt am Main, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Substituted polycylic derivatives of the 9-oxo-1,9a,10-triaza-9-hyd...
- Patent number 5,055,580
- Issue date Oct 8, 1991
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pigments and use thereof
- Patent number 4,986,852
- Issue date Jan 22, 1991
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acrid...
- Patent number 4,937,345
- Issue date Jun 26, 1990
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pigments of the quinacridonequinone series, processes for their pre...
- Patent number 4,881,980
- Issue date Nov 21, 1989
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of linear quinacridones
- Patent number 4,758,664
- Issue date Jul 19, 1988
- Hoechst Aktiengesellschaft
- Ernst Spietschka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Pigments of the quinacridonequinone series, process for their prepa...
- Patent number 4,693,753
- Issue date Sep 15, 1987
- Hoechst Aktiengesellschaft
- Ernst Spietschka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Frank Prokschy

Person

Patents Grantslast 30 patents

Substituted polycylic derivatives of the 9-oxo-1,9a,10-triaza-9-hyd...

Pigments and use thereof

Process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acrid...

Pigments of the quinacridonequinone series, processes for their pre...

Process for the preparation of linear quinacridones

Pigments of the quinacridonequinone series, process for their prepa...