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James B. Sieja
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Wilmington, DE, US
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Patents Grants
last 30 patents
Information
Patent Grant
Process for reproducing a mixture containing cyclododecanone and cy...
Patent number
5,892,123
Issue date
Apr 6, 1999
E. I. Du Pont de Nemours and Company
Howard Wayne Anderson
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of 2-methylglutaronitrile or adiponitrile
Patent number
5,312,959
Issue date
May 17, 1994
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of aminonitriles or diamines
Patent number
5,192,399
Issue date
Mar 9, 1993
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of 6-aminocapronitrile
Patent number
5,162,567
Issue date
Nov 10, 1992
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Removal of tetrahydroazepine (tha) from 6-aminocapronitrile by reac...
Patent number
5,153,351
Issue date
Oct 6, 1992
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of 6-aminocapronitrile
Patent number
5,133,838
Issue date
Jul 28, 1992
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Manufacture of 5-cyanovaleric acid and its esters using cyclic coso...
Patent number
4,950,778
Issue date
Aug 21, 1990
E. I. Du Pont de Nemours and Company
Patrick M. Burke
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Manufacture of 5-cyanovaleric acid and its esters
Patent number
4,933,483
Issue date
Jun 12, 1990
E. I. Du Pont de Nemours and Company
Patrick M. Burke
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Carbonylation of olefinically unsaturated nitriles and acids using...
Patent number
4,508,660
Issue date
Apr 2, 1985
E. I. Du Pont de Nemours and Company
James B. Sieja
C07 - ORGANIC CHEMISTRY