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Richard Edward Ernst
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Kennett Square, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Catalyst regeneration by treatment with an oxidizing agent
Patent number
6,566,539
Issue date
May 20, 2003
E. I. Du Pont de Nemours and Company
Daniel Campos
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Narrowing of poly (tetramethylene ether) glycol
Patent number
6,355,846
Issue date
Mar 12, 2002
E. I. Du Pont de Nemours and Company
Suri Narayan Dorai
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for regeneration of carbon-supported, rhenium-containing ca...
Patent number
6,225,477
Issue date
May 1, 2001
E. I. Du Pont de Nemours and Company
Richard Edward Ernst
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for controlling color formation during polytetramethylene et...
Patent number
5,596,074
Issue date
Jan 21, 1997
E. I. Du Pont de Nemours and Company
Peter A. Bloxham
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for reducing fluoride levels in poly(tetramethylene ether)...
Patent number
4,954,658
Issue date
Sep 4, 1990
E. I. Du Pont de Nemours and Company
Suriyanarayanan Dorai
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Preparation of mixtures of butanediols
Patent number
4,879,420
Issue date
Nov 7, 1989
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Synthesis of mixtures of butanediols
Patent number
4,859,801
Issue date
Aug 22, 1989
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing a mixture of tetrahydrofuran and 3-alkyl tetr...
Patent number
4,590,285
Issue date
May 20, 1986
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 2-alkyl-1,4-butanediols
Patent number
4,590,312
Issue date
May 20, 1986
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for simultaneous hydrogenation of 2-butyne-1,4-diol and furan
Patent number
4,499,291
Issue date
Feb 12, 1985
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of tetrahydrofuran
Patent number
4,413,136
Issue date
Nov 1, 1983
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of 1,4-butanediol
Patent number
4,383,895
Issue date
May 17, 1983
E. I. Du Pont de Nemours and Company
Richard E. Ernst
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for regenerating hydrogenation catalyst activity in hydroge...
Patent number
3,998,936
Issue date
Dec 21, 1976
E. I. Du Pont de Nemours and Company
Richard Edward Ernst
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Catalyst regeneration by solvent extraction
Publication number
20040077885
Publication date
Apr 22, 2004
Daniel Campos
C07 - ORGANIC CHEMISTRY