David L. Coffen

Person

Glen Ridge, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Production of 2-hydroxy substituted arylalkanoic acids and esters b...
- Patent number 5,061,629
- Issue date Oct 29, 1991
- Hoffman-La Roche Inc.
- David L. Coffen
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Production of benzopyran-2-carboxylic acids and esters by enzymatic...
- Patent number 5,037,747
- Issue date Aug 6, 1991
- Hoffmann-La Roche Inc.
- David L. Coffen
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Glycidic acid ester and process of preparation
- Patent number 5,008,411
- Issue date Apr 16, 1991
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Lower-alkyl or aryl-sulfonyl unsaturated tacopherols
- Patent number 4,882,441
- Issue date Nov 21, 1989
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Vitamin E intermediate
- Patent number 4,879,395
- Issue date Nov 7, 1989
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Prostaglandin intermediates
- Patent number 4,866,205
- Issue date Sep 12, 1989
- Hoffman-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Vitamin E intermediates
- Patent number 4,853,472
- Issue date Aug 1, 1989
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-(trimethyl-tridecenyl)-tetramethylchroman intermediates for vitam...
- Patent number 4,789,750
- Issue date Dec 6, 1988
- Hoffman-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Prostaglandin intermediates
- Patent number 4,707,555
- Issue date Nov 17, 1987
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cyclopenta[b]furan-2-ones
- Patent number 4,558,140
- Issue date Dec 10, 1985
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for bicyclic diketones
- Patent number 4,495,354
- Issue date Jan 22, 1985
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of diketones
- Patent number 4,483,990
- Issue date Nov 20, 1984
- Hoffman-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Lasalocid derivatives
- Patent number 4,247,690
- Issue date Jan 27, 1981
- Hoffmann-La Roche Inc.
- David Coffen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preservation of aqueous systems with 2-chloro-3-oxobutyramide deriv...
- Patent number 4,247,712
- Issue date Jan 27, 1981
- Givaudan Corporation
- Harold A. Brandman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Preservation of aqueous systems with .alpha.-chloro-.beta.-aminocro...
- Patent number 4,217,363
- Issue date Aug 12, 1980
- Givaudan Corporation
- Harold A. Brandman
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preservation of aqueous systems with 2-chloro-3-oxobutyramide deriv...
- Patent number 4,214,002
- Issue date Jul 22, 1980
- Givaudan Corporation
- Harold A. Brandman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Novel 4-phenoxy-5-sulfamylbenzoic acid
- Patent number 4,208,535
- Issue date Jun 17, 1980
- Hoffmann-La Roche Inc.
- David L. Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preservation of aqueous systems with .alpha.-bromo-.beta.-aminocrot...
- Patent number 4,206,229
- Issue date Jun 3, 1980
- Givaudan Corporation
- Harold A. Brandman
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preservation of aqueous systems with .alpha.-halo-.beta.-aminocroto...
- Patent number 4,199,600
- Issue date Apr 22, 1980
- Givaudan Corporation
- Harold A. Brandman
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Lasalocid derivatives
- Patent number 4,193,928
- Issue date Mar 18, 1980
- Hoffmann-La Roche Inc.
- David Coffen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Novel 4-phenoxy-5-sulfamylbenzoic acid derivatives
- Patent number 4,118,587
- Issue date Oct 3, 1978
- Hoffmann-La Roche Inc.
- David Llewellyn Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of pyridoxine intermediates from diketene
- Patent number 4,093,654
- Issue date Jun 6, 1978
- Hoffmann-La Roche Inc.
- David Llewellyn Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Conversion of 4-lower alkyloxazole-5-carboxamide to 4-lower alkyl-5...
- Patent number 4,026,901
- Issue date May 31, 1977
- Hoffmann-La Roche Inc.
- David Llewellyn Coffen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2,5-Epithio-1,4-benzodiazepines
- Patent number 3,932,399
- Issue date Jan 13, 1976
- Hoffmann-La Roche Inc.
- David Llewellyn Coffen
- C07 - ORGANIC CHEMISTRY

David L. Coffen

Person

Patents Grantslast 30 patents

Production of 2-hydroxy substituted arylalkanoic acids and esters b...

Production of benzopyran-2-carboxylic acids and esters by enzymatic...

Glycidic acid ester and process of preparation

Lower-alkyl or aryl-sulfonyl unsaturated tacopherols

Vitamin E intermediate

Prostaglandin intermediates

Vitamin E intermediates

2-(trimethyl-tridecenyl)-tetramethylchroman intermediates for vitam...

Prostaglandin intermediates

Cyclopenta[b]furan-2-ones

Process for bicyclic diketones

Preparation of diketones

Lasalocid derivatives

Preservation of aqueous systems with 2-chloro-3-oxobutyramide deriv...

Preservation of aqueous systems with .alpha.-chloro-.beta.-aminocro...

Preservation of aqueous systems with 2-chloro-3-oxobutyramide deriv...

Novel 4-phenoxy-5-sulfamylbenzoic acid

Preservation of aqueous systems with .alpha.-bromo-.beta.-aminocrot...

Preservation of aqueous systems with .alpha.-halo-.beta.-aminocroto...

Lasalocid derivatives

Novel 4-phenoxy-5-sulfamylbenzoic acid derivatives

Production of pyridoxine intermediates from diketene

Conversion of 4-lower alkyloxazole-5-carboxamide to 4-lower alkyl-5...

2,5-Epithio-1,4-benzodiazepines