Steward E. Purdy

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Binghamton, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Recording medium of improved stability
- Patent number 5,002,852
- Issue date Mar 26, 1991
- GAF Chemicals Corporation
- David F. Lewis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for sensitizing polyacetylenic films
- Patent number 4,970,137
- Issue date Nov 13, 1990
- GAF Chemicals Corporation
- David F. Lewis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sensitivity of processless recording media
- Patent number 4,784,934
- Issue date Nov 15, 1988
- GAF Corporation
- David F. Lewis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sensitivity of processless recording media
- Patent number 4,734,355
- Issue date Mar 29, 1988
- GAF Corporation
- David F. Lewis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY