Karl W. Seper

Follow

Person

Grand Island, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Preventing potassium bicarbonate from caking
- Patent number 5,441,669
- Issue date Aug 15, 1995
- Karl W. Seper
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Synthesis of 4-substituted phthalic anhydrides
- Patent number 5,322,954
- Issue date Jun 21, 1994
- Occidental Chemical Corporation
- Karl W. Seper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochlorination of phthalic anhydride
- Patent number 5,300,201
- Issue date Apr 5, 1994
- Occidental Chemical Corporation
- Karl W. Seper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making chromic oxide
- Patent number 5,215,727
- Issue date Jun 1, 1993
- Occidental Chemical Corporation
- Robert L. Zeller
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for the preparation of halophthalic anhydrides
- Patent number 5,206,391
- Issue date Apr 27, 1993
- Occidental Chemical Corporation
- Karl W. Seper
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Halogenated trifluoromethylbenzenes
- Patent number 5,196,593
- Issue date Mar 23, 1993
- Occidental Chemical Corporation
- Karl W. Seper
- C07 - ORGANIC CHEMISTRY