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William Roberts
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Hagfors, SE
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last 30 patents
Information
Patent Grant
Cold work steel
Patent number
4,936,911
Issue date
Jun 26, 1990
Uddeholm Tooling Aktiebolag
William Roberts
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Tool steel
Patent number
4,863,515
Issue date
Sep 5, 1989
Uddeholm Tooling Aktiebolag
William Roberts
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Low-alloy steel material, die blocks and other heavy forgings made...
Patent number
4,765,849
Issue date
Aug 23, 1988
Uddeholm Tooling Aktiebolag
William Roberts
C21 - METALLURGY OF IRON
Information
Patent Grant
Low-alloy steel material, die blocks and other heavy forgings made...
Patent number
4,673,433
Issue date
Jun 16, 1987
Uddeholm Tooling Aktiebolag
William Roberts
C21 - METALLURGY OF IRON