Karl E. Wiegand

Person

Baton Rouge, LA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Production of hydrocarbon-soluble hydrocarbylaluminoxanes
- Patent number 5,847,177
- Issue date Dec 8, 1998
- Albemarle Corporation
- Samuel A. Sangokoya
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Aluminoxanate compositions
- Patent number 5,565,395
- Issue date Oct 15, 1996
- Albemarle Corporation
- Samuel A. Sangokoya
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Zeolite compositions
- Patent number 5,252,345
- Issue date Oct 12, 1993
- Ethyl Corporation
- Patrick C. Hu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Silicon compounds in bone treatment
- Patent number 5,183,061
- Issue date Feb 2, 1993
- Ethyl Corporation
- Karl E. Wiegand
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Modulation of adenylate cyclase response
- Patent number 4,954,448
- Issue date Sep 4, 1990
- Nelson Research & Development Company
- Karl E. Wiegand
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Silicon compounds in poultry hatching
- Patent number 4,917,045
- Issue date Apr 17, 1990
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicon containing reaction product
- Patent number 4,870,191
- Issue date Sep 26, 1989
- Ethyl Corporation
- Karl E. Wiegand
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Di(alkylthio)diamine chain extenders for polyurethane elastomers
- Patent number 4,595,742
- Issue date Jun 17, 1986
- Ethyl Corporation
- Christopher J. Nalepa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of pyrryl-2-acetonitrile
- Patent number 4,374,256
- Issue date Feb 15, 1983
- Ethyl Corporation
- James T. F. Kao
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 5-aroyl-pyrrole compounds
- Patent number 4,187,230
- Issue date Feb 5, 1980
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of citric acid
- Patent number 4,113,771
- Issue date Sep 12, 1978
- Ethyl Corporation
- Walter W. Lawrence
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Carnitine nitrile halide preparation
- Patent number 4,070,394
- Issue date Jan 24, 1978
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chemical process
- Patent number 4,066,688
- Issue date Jan 3, 1978
- Ethyl Corporation
- Walter W. Lawrence
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing a mixed anhydride of a sulfonic acid and a ca...
- Patent number 4,008,271
- Issue date Feb 15, 1977
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Carbamoyl-3-hydroxyglutaric acid and salts
- Patent number 3,965,168
- Issue date Jun 22, 1976
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chemical process for producing citric acid
- Patent number 3,962,287
- Issue date Jun 8, 1976
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Hydroxy-3,4-dicarbamoylbutyric acid and salts
- Patent number 3,960,941
- Issue date Jun 1, 1976
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of toluoyl-5-pyrryl-2-acetonitrile
- Patent number 3,935,216
- Issue date Jan 27, 1976
- Ethyl Corporation
- Karl E. Wiegand
- C07 - ORGANIC CHEMISTRY

Karl E. Wiegand

Person

Patents Grantslast 30 patents

Production of hydrocarbon-soluble hydrocarbylaluminoxanes

Aluminoxanate compositions

Zeolite compositions

Silicon compounds in bone treatment

Modulation of adenylate cyclase response

Silicon compounds in poultry hatching

Silicon containing reaction product

Di(alkylthio)diamine chain extenders for polyurethane elastomers

Process for the preparation of pyrryl-2-acetonitrile

Preparation of 5-aroyl-pyrrole compounds

Process for the purification of citric acid

Carnitine nitrile halide preparation

Chemical process

Process for preparing a mixed anhydride of a sulfonic acid and a ca...

3-Carbamoyl-3-hydroxyglutaric acid and salts

Chemical process for producing citric acid

3-Hydroxy-3,4-dicarbamoylbutyric acid and salts

Preparation of toluoyl-5-pyrryl-2-acetonitrile