James Pappis

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Westwood, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Polycrystalline zinc sulfide and zinc selenide articles having impr...
- Patent number 5,126,081
- Issue date Jun 30, 1992
- Raytheon Company
- Charles B. Willingham
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Polycrystalline zinc sulfide and zinc selenide articles having impr...
- Patent number 4,944,900
- Issue date Jul 31, 1990
- Raytheon Company
- Charles B. Willingham
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Isotropic boron nitride and method of making same
- Patent number 4,096,297
- Issue date Jun 20, 1978
- Raytheon Company
- James Pappis
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...