James R. Bartels-Keith

Person

Lexington, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Photographic reagent tetrazoles
- Patent number 4,847,383
- Issue date Jul 11, 1989
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic system and novel compounds
- Patent number 4,713,313
- Issue date Dec 15, 1987
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Uracil derivatives of thio- and selenourea compounds
- Patent number 4,526,965
- Issue date Jul 2, 1985
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic products and processes and novel compounds
- Patent number 4,503,139
- Issue date Mar 5, 1985
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Development restrainer release compounds
- Patent number 4,442,290
- Issue date Apr 10, 1984
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Amino hydroxy cyclohexenone developing agents
- Patent number 4,371,603
- Issue date Feb 1, 1983
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Bicyclic reductone developing agents
- Patent number 4,365,085
- Issue date Dec 21, 1982
- Polaroid Corporation
- James R. Bartels-Keith
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Blocked development restrainers
- Patent number 4,350,754
- Issue date Sep 21, 1982
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Synthesis of amino hydroxy cyclopentenones
- Patent number 4,304,934
- Issue date Dec 8, 1981
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Bicyclic reductone developing agents
- Patent number 4,154,611
- Issue date May 15, 1979
- Polaroid Corporation
- James R. Bartels-Keith
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Meso-ionic se- and s-containing tetrazoles
- Patent number 4,003,910
- Issue date Jan 18, 1977
- Polaroid Corporation
- James R. Bartels-Keith
- C07 - ORGANIC CHEMISTRY

James R. Bartels-Keith

Person

Patents Grantslast 30 patents

Photographic reagent tetrazoles

Photographic system and novel compounds

Uracil derivatives of thio- and selenourea compounds

Photographic products and processes and novel compounds

Development restrainer release compounds

Amino hydroxy cyclohexenone developing agents

Bicyclic reductone developing agents

Blocked development restrainers

Synthesis of amino hydroxy cyclopentenones

Bicyclic reductone developing agents

Meso-ionic se- and s-containing tetrazoles