Heinrich Volk

Person

Bad Vilbel, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing arylhydrazines
- Patent number 6,057,478
- Issue date May 2, 2000
- Clariant GmbH
- Thomas Schach
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 3-hydroxy-N-benzimidazolon-5-yl-2-na...
- Patent number 5,756,757
- Issue date May 26, 1998
- Hoechst Aktiengesellschaft
- Michael Meier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2(3H)-benzothiazolones
- Patent number 5,594,145
- Issue date Jan 14, 1997
- Hoechst AG
- Klaus Forstinger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2-aminobenzothiazoles
- Patent number 5,374,737
- Issue date Dec 20, 1994
- Hoechst Aktiengesellschaft
- Steffen Dapperheld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of 2-hydroxynaphthalene-6-carboxylic acid
- Patent number 4,916,257
- Issue date Apr 10, 1990
- Hoechst Aktiengesellschaft
- Helmold von Plessen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 6-acetoxy-2-naphthoic-acid and pure 6-hydroxy...
- Patent number 4,618,701
- Issue date Oct 21, 1986
- Hoechst Aktiengesellschaft
- Rudolf Neeb
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing pure alkyl 1-hydroxy-2-naphthoates
- Patent number 4,521,617
- Issue date Jun 4, 1985
- Hoechst Aktiengesellschaft
- Theodor Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for separation of 2-hydroxynapthalene-3-carboxylic acid fro...
- Patent number 4,415,750
- Issue date Nov 15, 1983
- Hoechst Aktiengesellschaft
- Heinrich Volk
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Water-insoluble disazomethine mixed metal-complex compounds, proces...
- Patent number 4,157,265
- Issue date Jun 5, 1979
- Hoechst Aktiengesellschaft
- Theodor Papenfuhs
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Metal-containing disazomethine compounds, process for preparing the...
- Patent number 4,113,759
- Issue date Sep 12, 1978
- Hoechst Aktiengesellschaft
- Theodor Papenfuhs
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Novel 2-hydroxynaphthalene-1-aldehydes, process for preparing them...
- Patent number 4,110,375
- Issue date Aug 29, 1978
- Hoechst Aktiengesellschaft
- Theodor Papenfuhs
- C07 - ORGANIC CHEMISTRY

Heinrich Volk

Person

Patents Grantslast 30 patents

Process for preparing arylhydrazines

Process for the preparation of 3-hydroxy-N-benzimidazolon-5-yl-2-na...

Process for the preparation of 2(3H)-benzothiazolones

Process for the preparation of 2-aminobenzothiazoles

Process for the purification of 2-hydroxynaphthalene-6-carboxylic acid

Process for preparing 6-acetoxy-2-naphthoic-acid and pure 6-hydroxy...

Process for preparing pure alkyl 1-hydroxy-2-naphthoates

Process for separation of 2-hydroxynapthalene-3-carboxylic acid fro...

Water-insoluble disazomethine mixed metal-complex compounds, proces...

Metal-containing disazomethine compounds, process for preparing the...

Novel 2-hydroxynaphthalene-1-aldehydes, process for preparing them...