Helmut B. Witteler

Person

Beindersheim, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Polymer electrolytes and process for their preparation
- Patent number 7,307,138
- Issue date Dec 11, 2007
- Joachim Clauss
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process and products of purification of anhydrosugar alcohols
- Patent number 6,670,033
- Issue date Dec 30, 2003
- E. I. Du Pont de Nemours and Company
- Michael A. Hubbard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyesters including isosorbide as a comonomer blended with other t...
- Patent number 6,359,070
- Issue date Mar 19, 2002
- E. I. Du Pont Nemours and Company
- Garo Khanarian
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing solution of polymers functionalized by acid gr...
- Patent number 6,348,516
- Issue date Feb 19, 2002
- Celanese Ventures GmbH
- Thomas Soczka-Guth
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing a cation-exchanging polymer electrolyte membr...
- Patent number 6,214,891
- Issue date Apr 10, 2001
- Hoechst Research & Technology Deutschland GmbH & Co., KG
- Arnold Schneller
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for continuous production of membrane-electrode composites
- Patent number 6,197,147
- Issue date Mar 6, 2001
- Hoescht Research & Technology Deutschland GmbH & Co. KG
- Harald Bönsel
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Polyesters including isosorbide as a comonomer blended with other t...
- Patent number 6,140,422
- Issue date Oct 31, 2000
- E. I. DuPont de Nemours and Company
- Garo Khanarian
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical articles comprising isosorbide polyesters and method for ma...
- Patent number 6,126,992
- Issue date Oct 3, 2000
- E. I. DuPont de Nemours and Company
- Garo Khanarian
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymer electrolytes and process for their production
- Patent number 6,096,856
- Issue date Aug 1, 2000
- Hoechst Research & Technology Deutschland GmbH & Co. KG
- Freddy Helmer-Metzmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyarylene sulphides with polymer-bound phosphonium salts and proc...
- Patent number 6,077,918
- Issue date Jun 20, 2000
- Hoechst Aktiengesellschaft
- Helmut Witteler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Isosorbide containing polyesters and methods for making same
- Patent number 6,063,464
- Issue date May 16, 2000
- HNA Holdings, Inc.
- Larry F. Charbonneau
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyester fiber and methods for making same
- Patent number 6,063,495
- Issue date May 16, 2000
- HNA Holdings, Inc.
- Larry F. Charbonneau
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Sheets formed from polyesters including isosorbide
- Patent number 6,025,061
- Issue date Feb 15, 2000
- HNA Holdings, Inc.
- Garo Khanarian
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyesters including isosorbide as a comonomer and methods for maki...
- Patent number 5,959,066
- Issue date Sep 28, 1999
- HNA Holdings, Inc.
- Larry F. Charbonneau
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Metallized cation exchange membrane
- Patent number 5,906,716
- Issue date May 25, 1999
- Hoechst Aktiengesellschaft
- Petra Mertesdorf
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR

Patents Applicationslast 30 patents

Information Patent Application
Polymer electrolytes and process for their preparation
- Publication number 20050131196
- Publication date Jun 16, 2005
- HOECHST AKTIENGESELLSCHAFT
- Joachim Clauss
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymer electrolytes and process for their preparation
- Publication number 20030069386
- Publication date Apr 10, 2003
- Joachim Clauss
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYMER ELECTROLYTES AND PROCESS FOR THEIR PRODUCTION
- Publication number 20020103327
- Publication date Aug 1, 2002
- JOACHIM CLAUB
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Helmut B. Witteler

Person

Patents Grantslast 30 patents

Polymer electrolytes and process for their preparation

Process and products of purification of anhydrosugar alcohols

Polyesters including isosorbide as a comonomer blended with other t...

Method for producing solution of polymers functionalized by acid gr...

Process for producing a cation-exchanging polymer electrolyte membr...

Process for continuous production of membrane-electrode composites

Polyesters including isosorbide as a comonomer blended with other t...

Optical articles comprising isosorbide polyesters and method for ma...

Polymer electrolytes and process for their production

Polyarylene sulphides with polymer-bound phosphonium salts and proc...

Isosorbide containing polyesters and methods for making same

Polyester fiber and methods for making same

Sheets formed from polyesters including isosorbide

Polyesters including isosorbide as a comonomer and methods for maki...

Metallized cation exchange membrane

Patents Applicationslast 30 patents

Polymer electrolytes and process for their preparation

Polymer electrolytes and process for their preparation

POLYMER ELECTROLYTES AND PROCESS FOR THEIR PRODUCTION