Richard L. Ritchie

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Marlborough, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Shelling apparatus and methods for investment casting
- Patent number 7,021,362
- Issue date Apr 4, 2006
- United Technologies Corporation
- John J. Marcin, Jr.
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Shelling apparatus and methods for investment casting
- Patent number 6,966,354
- Issue date Nov 22, 2005
- United Technologies Corporation
- John J. Marcin, Jr.
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
Shelling apparatus and methods for investment casting
- Publication number 20050274482
- Publication date Dec 15, 2005
- John J. Marcin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Shelling apparatus and methods for investment casting
- Publication number 20050121167
- Publication date Jun 9, 2005
- John J. Marcin
- B22 - CASTING POWDER METALLURGY