Hans W. Kleffner

Person

Battenberg, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Food products
- Patent number 5,456,935
- Issue date Oct 10, 1995
- Rutgerswerke AG
- Manfred Kuhnert
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preparation of isomer-free 2,5-dichloro-pyridine
- Patent number 5,380,862
- Issue date Jan 10, 1995
- Rutgerswerke Aktiengesellschaft
- Stefan Sendelbach
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hazardous chemical decontamination process
- Patent number 5,271,772
- Issue date Dec 21, 1993
- Rutgerswerke AG
- Urs Riede
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene
- Patent number 5,169,990
- Issue date Dec 8, 1992
- Rutgerswerke Aktiengesellschaft
- Winfried Orth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene
- Patent number 5,149,886
- Issue date Sep 22, 1992
- Rutgerswerke AG
- Winfried Orth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of pyridine-3-sulfonic acid
- Patent number 5,082,944
- Issue date Jan 21, 1992
- Rutgerswerke AG
- Rolf Losch
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel separation process
- Patent number 5,066,806
- Issue date Nov 19, 1991
- Rutgerswerke AG
- Emmerich Pastorek
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of 2-hydroxypyridine
- Patent number 4,942,239
- Issue date Jul 17, 1990
- Rutgerswerke AG
- Winfried Orth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of quinuclidine-3-methanol
- Patent number 4,925,942
- Issue date May 15, 1990
- Rutgerswerke AG
- Josef Gotz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hair dye composition
- Patent number 4,865,620
- Issue date Sep 12, 1989
- Ruetgerswerke Aktiengesellschaft
- Winfried Orth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Hans W. Kleffner

Person

Patents Grantslast 30 patents

Food products

Preparation of isomer-free 2,5-dichloro-pyridine

Hazardous chemical decontamination process

Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene

Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene

Production of pyridine-3-sulfonic acid

Novel separation process

Process for the production of 2-hydroxypyridine

Preparation of quinuclidine-3-methanol

Hair dye composition