John Hewitt

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Colne, GB

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Patents Grantslast 30 patents

Information Patent Grant
Hot forming die having a nickel oxide layer
- Patent number 6,935,151
- Issue date Aug 30, 2005
- Rolls-Royce PLC
- John Hewitt
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Hot forming die and a method of cleaning a hot forming die
- Patent number 6,616,775
- Issue date Sep 9, 2003
- Rolls-Royce PLC
- John Hewitt
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
Forming die
- Publication number 20050172694
- Publication date Aug 11, 2005
- Rolls-Royce plc
- John Hewitt
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Hot forming die and a method of cleaning a hot forming die
- Publication number 20030209261
- Publication date Nov 13, 2003
- ROLLS-ROYCE PLC
- John Hewitt
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Hot forming die and a method of cleaning a hot forming die
- Publication number 20020056469
- Publication date May 16, 2002
- John Hewitt
- B22 - CASTING POWDER METALLURGY