Jochen Kopia

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Bendorf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Gas injection stone and process of manufacture thereof
- Patent number 5,279,993
- Issue date Jan 18, 1994
- Didier-Werke AG
- Hans Rothfuss
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Gas flushing apparatus for metallurgical vessel
- Patent number 5,160,478
- Issue date Nov 3, 1992
- Didier-Werke AG
- Hans Rothfuss
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for the manufacture of thin plates with low binding strength
- Patent number 4,952,343
- Issue date Aug 28, 1990
- Didier-Werke AG
- Norbert Gerharz
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Refractory ceramic sink
- Patent number 4,905,971
- Issue date Mar 6, 1990
- Didier-Werke AG
- Hans Rothfuss
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Composite refractory member
- Patent number 4,842,172
- Issue date Jun 27, 1989
- Didier-Werke AG
- Albert Kleinevoss
- B22 - CASTING POWDER METALLURGY