William H. Gumprecht

Person

Wilmington, DE, US

People

Patents Grantslast 30 patents

Information Patent Grant
Recovery of aluminum and/or fluoride values from used aluminum chlo...
- Patent number 5,663,478
- Issue date Sep 2, 1997
- E. I. Du Pont de Nemours and Company
- William Henry Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Halogen exchange process for manufacture of hydrochlorofluoropropanes
- Patent number 5,608,127
- Issue date Mar 4, 1997
- E. I. DuPont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of pentafluoroethane
- Patent number 5,399,549
- Issue date Mar 21, 1995
- E. I. Du Pont de Nemours and Company
- Vinci M. Felix
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of pentafluoroethane
- Patent number 5,334,787
- Issue date Aug 2, 1994
- E. I. Du Pont de Nemours and Company
- Vinci M. Felix
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Isomerization process
- Patent number 5,302,766
- Issue date Apr 12, 1994
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for 1,1-dichloro-1-fluoroethane
- Patent number 5,051,538
- Issue date Sep 24, 1991
- E. I. DuPont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluorination of haloolefins
- Patent number 5,045,634
- Issue date Sep 3, 1991
- E. I. Du Pont de Nemours and Company
- Richard E. Fernandez
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for purifying hydrogen fluoride
- Patent number 4,990,320
- Issue date Feb 5, 1991
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Catalyzed hydrofluorination process
- Patent number 4,967,024
- Issue date Oct 30, 1990
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Spent antimony halide catalysts treatment
- Patent number 4,960,742
- Issue date Oct 2, 1990
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for purifying hydrogen fluoride
- Patent number 4,960,580
- Issue date Oct 2, 1990
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Liquid phase halogen exchange process for the manufacture of 1,1,1,...
- Patent number 4,851,595
- Issue date Jul 25, 1989
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,...
- Patent number 4,843,181
- Issue date Jun 27, 1989
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of 1,1,1,2-tetrafluoroethane
- Patent number 4,311,863
- Issue date Jan 19, 1982
- E. I. Du Pont de Nemours and Company
- William H. Gumprecht
- C07 - ORGANIC CHEMISTRY

William H. Gumprecht

Person

Patents Grantslast 30 patents

Recovery of aluminum and/or fluoride values from used aluminum chlo...

Halogen exchange process for manufacture of hydrochlorofluoropropanes

Process for the manufacture of pentafluoroethane

Process for the manufacture of pentafluoroethane

Isomerization process

Process for 1,1-dichloro-1-fluoroethane

Fluorination of haloolefins

Process for purifying hydrogen fluoride

Catalyzed hydrofluorination process

Spent antimony halide catalysts treatment

Process for purifying hydrogen fluoride

Liquid phase halogen exchange process for the manufacture of 1,1,1,...

Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,...

Process for the manufacture of 1,1,1,2-tetrafluoroethane