David F. Berry

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Westlake, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Infiltrated powder metal part and method for making same
- Patent number 4,976,778
- Issue date Dec 11, 1990
- SCM Metal Products, Inc.
- David F. Berry
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for preparing powder metal parts with dynamic properties
- Patent number 4,921,665
- Issue date May 1, 1990
- SCM Metal Products, Inc.
- Erhard Klar
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Infiltrated powder metal part having improved impact strength tensi...
- Patent number 4,861,373
- Issue date Aug 29, 1989
- SCM Metal Products, Inc.
- Erhard Klar
- B22 - CASTING POWDER METALLURGY