H. David Layman

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Ulster, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Zinc sulfide phosphor coactivated with copper and aluminum
- Patent number 4,088,921
- Issue date May 9, 1978
- GTE Sylvania Incorporated
- H. David Layman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for producing cadmium free green emitting cathodoluminescent...
- Patent number 4,038,205
- Issue date Jul 26, 1977
- GTE Sylvania Incorporated
- Henry B. Minnier
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for reclaiming rare earth oxysulfide phosphors
- Patent number 3,941,714
- Issue date Mar 2, 1976
- GTE Sylvania Incorporated
- James E. Mathers
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...