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Harry B. Copelin
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Wilmington, DE, US
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Patents Grants
last 30 patents
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Patent Grant
Method for reducing oligomeric cyclic ether content of a polymerizate
Patent number
4,500,705
Issue date
Feb 19, 1985
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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
Method for reducing oligomeric cyclic ether content of a polymerizate
Patent number
4,306,058
Issue date
Dec 15, 1981
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Preparation of high purity 1,4-butanediol
Patent number
4,294,998
Issue date
Oct 13, 1981
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Pd/SiO.sub.2 Hydrogenation catalyst suitable for H.sub.2 O.sub.2 ma...
Patent number
4,258,025
Issue date
Mar 24, 1981
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Pd/SiO.sub.2 Hydrogenation catalyst suitable for H.sub.2 O.sub.2 ma...
Patent number
4,240,933
Issue date
Dec 23, 1980
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Reduction in chemical oxygen demand of water from crude tetrahydrof...
Patent number
4,197,248
Issue date
Apr 8, 1980
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Separation of alcohol from tetrahydrofuran
Patent number
4,175,009
Issue date
Nov 20, 1979
E. I. Du Pont de Nemours and Company
Harry B. Copelin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of an acetal from a diol and acrolein
Patent number
4,108,869
Issue date
Aug 22, 1978
E. I. Du Pont de Nemours and Company
Harry Bugbird Copelin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
One-step method for hydrolyzing and hydrogenating acetal-aldehydes
Patent number
4,044,059
Issue date
Aug 23, 1977
E. I. Du Pont de Nemours and Company
Harry Bugbird Copelin
C07 - ORGANIC CHEMISTRY