William C. Ziegenhain

Person

Ponca City, OK, US

People

Patents Grantslast 30 patents

Information Patent Grant
Process for purifying hydrogen fluoride
- Patent number 5,100,639
- Issue date Mar 31, 1992
- E. I. Du Pont de Nemours and Company
- Francisco J. Freire
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for purifying hydrogen fluoride
- Patent number 4,954,330
- Issue date Sep 4, 1990
- E. I. DuPont de Nemours and Company
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for the recovery of geothermal energy
- Patent number 4,458,492
- Issue date Jul 10, 1984
- Conoco Inc.
- William C. Ziegenhain
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Removal of impurities
- Patent number 4,443,634
- Issue date Apr 17, 1984
- Conoco Inc.
- William C. Ziegenhain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making alumina fibers
- Patent number 4,296,057
- Issue date Oct 20, 1981
- Conoco Inc.
- William C. Ziegenhain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making aluminum chlorohydrate
- Patent number 4,267,161
- Issue date May 12, 1981
- Conoco, Inc.
- William C. Ziegenhain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Removal of catalyst from ethoxylates by centrifugation
- Patent number 4,254,287
- Issue date Mar 3, 1981
- Conoco, Inc.
- William C. Ziegenhain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing alumina
- Patent number 4,133,871
- Issue date Jan 9, 1979
- Continental Oil Co.
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Producing alumina having a majority of pore diameters of 35-80A
- Patent number 4,024,231
- Issue date May 17, 1977
- Continental Oil Company
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
High-porosity, high-surface area, low-bulk density alumina
- Patent number 3,987,155
- Issue date Oct 19, 1976
- Continental Oil Company
- William C. Ziegenhain
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Calcining method for alumina
- Patent number 3,979,504
- Issue date Sep 7, 1976
- Continental Oil Company
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing concentrated alumina slurries
- Patent number 3,975,231
- Issue date Aug 17, 1976
- Continental Oil Company
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing catalyst impregnated alumina extrudates
- Patent number 3,933,685
- Issue date Jan 20, 1976
- Continental Oil Company
- Galen K. Madderra
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

William C. Ziegenhain

Person

Patents Grantslast 30 patents

Process for purifying hydrogen fluoride

Process for purifying hydrogen fluoride

Method for the recovery of geothermal energy

Removal of impurities

Method of making alumina fibers

Method of making aluminum chlorohydrate

Removal of catalyst from ethoxylates by centrifugation

Process for preparing alumina

Producing alumina having a majority of pore diameters of 35-80A

High-porosity, high-surface area, low-bulk density alumina

Calcining method for alumina

Method for producing concentrated alumina slurries

Method for producing catalyst impregnated alumina extrudates