Richard B. Greenwald

Person

Cambridge, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Sulfonyl-cyano alkane silver halide solvents
- Patent number 4,345,018
- Issue date Aug 17, 1982
- Polaroid Corporation
- Alan L. Borror
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Synthesis of perfluorodialdehydes
- Patent number 4,302,612
- Issue date Nov 24, 1981
- Polaroid Corporation
- David H. Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic compositions with silver halide solvents containing th...
- Patent number 4,211,562
- Issue date Jul 8, 1980
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic processes and compositions employing thioether contain...
- Patent number 4,211,559
- Issue date Jul 8, 1980
- Texas Instruments Incorporated
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thioether substituted silver halide solvents
- Patent number 4,150,228
- Issue date Apr 17, 1979
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic developers
- Patent number 4,128,425
- Issue date Dec 5, 1978
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thioether substituted silver halide solvents
- Patent number 4,126,459
- Issue date Nov 21, 1978
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conversion of N-tosylsulfoximides to sulfoximines
- Patent number 4,113,738
- Issue date Sep 12, 1978
- Polaroid Corporation
- David H. Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Mono-N-tosylsulfimides, their preparation and their reaction products
- Patent number 4,107,176
- Issue date Aug 15, 1978
- Polaroid Corporation
- David H. Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4-Hydroxypyrazole developing agents
- Patent number 4,102,684
- Issue date Jul 25, 1978
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Certain benzothiazolium compounds
- Patent number 4,089,866
- Issue date May 16, 1978
- Polaroid Corporation
- Stanley M. Bloom
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Naphthalide indicator dyes
- Patent number 4,056,539
- Issue date Nov 1, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4-Hydroxypyrazole developing agents
- Patent number 4,049,450
- Issue date Sep 20, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfinyl-sulfonyl alkane silver halide solvents
- Patent number 4,047,954
- Issue date Sep 13, 1977
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
(Dialkylamino)alkyloxosulfonium alkanesulfonylmethylide silver hali...
- Patent number 4,047,955
- Issue date Sep 13, 1977
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Disulfonyl silver halide solvents substituted with piperazine at on...
- Patent number 4,046,568
- Issue date Sep 6, 1977
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
1,3-Disulfonylcycloalkane
- Patent number 4,032,538
- Issue date Jun 28, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Highly fluorinated diazides and process therefor
- Patent number 4,020,176
- Issue date Apr 26, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Naphthalide indicator dyes
- Patent number 4,010,168
- Issue date Mar 1, 1977
- Polaroid Corporation
- Richard B. Greenwald
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
N-(lower alkyl sulfonyl-methyl sulfonyl)-piperazines
- Patent number 4,009,167
- Issue date Feb 22, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylsulfonyl methyl-substituted pyridine N-oxides
- Patent number 4,006,150
- Issue date Feb 1, 1977
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Precursors of .beta.-aza-disubstituted amino styryl dyes
- Patent number 4,006,151
- Issue date Feb 1, 1977
- Polaroid Corporation
- Stanley M. Bloom
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-(lower alkyl sulfonyl-methyl sulfonyl)-piperazines
- Patent number 3,976,647
- Issue date Aug 24, 1976
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylthioalkyl-substituted alkylsulfonylacetonitriles
- Patent number 3,975,423
- Issue date Aug 17, 1976
- Polaroid Corporation
- Alan L. Borror
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1,3-Disulfonylcycloalkanes as silver halide solvents
- Patent number 3,958,992
- Issue date May 25, 1976
- Polaroid Corporation
- Richard B. Greenwald
- C07 - ORGANIC CHEMISTRY

Richard B. Greenwald

Person

Patents Grantslast 30 patents

Sulfonyl-cyano alkane silver halide solvents

Synthesis of perfluorodialdehydes

Photographic compositions with silver halide solvents containing th...

Photographic processes and compositions employing thioether contain...

Thioether substituted silver halide solvents

Photographic developers

Thioether substituted silver halide solvents

Conversion of N-tosylsulfoximides to sulfoximines

Mono-N-tosylsulfimides, their preparation and their reaction products

4-Hydroxypyrazole developing agents

Certain benzothiazolium compounds

Naphthalide indicator dyes

4-Hydroxypyrazole developing agents

Sulfinyl-sulfonyl alkane silver halide solvents

(Dialkylamino)alkyloxosulfonium alkanesulfonylmethylide silver hali...

Disulfonyl silver halide solvents substituted with piperazine at on...

1,3-Disulfonylcycloalkane

Highly fluorinated diazides and process therefor

Naphthalide indicator dyes

N-(lower alkyl sulfonyl-methyl sulfonyl)-piperazines

Alkylsulfonyl methyl-substituted pyridine N-oxides

Precursors of .beta.-aza-disubstituted amino styryl dyes

N-(lower alkyl sulfonyl-methyl sulfonyl)-piperazines

Alkylthioalkyl-substituted alkylsulfonylacetonitriles

1,3-Disulfonylcycloalkanes as silver halide solvents