Ronald J. Keller

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Grand Haven, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of making investment casting molds
- Patent number 6,749,006
- Issue date Jun 15, 2004
- Howmet Research Corporation
- Xi Yang
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Ceramic core and method of making
- Patent number 6,578,623
- Issue date Jun 17, 2003
- Howmet Research Corporation
- Ronald J. Keller
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Impregnated alumina-based core and method
- Patent number 6,494,250
- Issue date Dec 17, 2002
- Howmet Research Corporation
- Gregory R. Frank
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Ceramic core and method of making
- Patent number 6,315,941
- Issue date Nov 13, 2001
- Howmet Research Corporation
- Ronald J. Keller
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
IMPREGNATED ALUMINA-BASED CORE AND METHOD
- Publication number 20020185243
- Publication date Dec 12, 2002
- Gregory R. Frank
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Ceramic core and method of making
- Publication number 20020117601
- Publication date Aug 29, 2002
- Howmet Research Corporation
- Ronald J. Keller
- B22 - CASTING POWDER METALLURGY