John W. Friederichs

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West Branch, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Articles of ultra fine grained cemented carbide and process for mak...
- Patent number 5,918,102
- Issue date Jun 29, 1999
- Valenite Inc
- John W. Friederichs
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Articles of ultra fine grained cemented carbide and process for mak...
- Patent number 5,368,628
- Issue date Nov 29, 1994
- Valenite Inc.
- John W. Friederichs
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for making non-magnetic nickel tungsten carbide cemented ca...
- Patent number 5,338,506
- Issue date Aug 16, 1994
- Valenite Inc.
- John W. Friederichs
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Cutting insert with raised cutting edge
- Patent number 5,123,788
- Issue date Jun 23, 1992
- GTE Valenite Corporation
- John W. Friederichs
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR