John L. Ferri

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Towanda, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Terbium-activated rare earth oxysulfide phosphors with controlled d...
- Patent number 4,113,648
- Issue date Sep 12, 1978
- GTE Sylvania Incorporated
- John L. Ferri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Terbium-activated rare earth oxysulfide X-ray phosphors
- Patent number 3,974,389
- Issue date Aug 10, 1976
- GTE Sylvania Incorporated
- John L. Ferri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Titanium-activated lanthanum oxysulfide phosphor and method of prep...
- Patent number 3,948,798
- Issue date Apr 6, 1976
- GTE Sylvania Incorporated
- John L. Ferri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...