Hermann Leupold

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Walluf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Parts subject to wear which come into contact with metal melts
- Patent number RE33700
- Issue date Sep 24, 1991
- Didier-Werke AG
- Gunter Gelsdorf
- 428 - Stock material or miscellaneous articles
Information Patent Grant
Silica bricks and process for production thereof
- Patent number 4,988,649
- Issue date Jan 29, 1991
- Didier-Werke AG
- Klaus Santowski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Refractory member formed of fiber material for use in sliding closu...
- Patent number 4,623,130
- Issue date Nov 18, 1986
- Raimund Bruckner
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Valve element for sliding type valve joints on the outlet of vessel...
- Patent number 4,268,016
- Issue date May 19, 1981
- Didier-Werke AG
- Axel Eschner
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Parts subject to wear which come into contact with metal melts
- Patent number 4,212,926
- Issue date Jul 15, 1980
- Didier-Werke AG
- Gunter Gelsdorf
- B22 - CASTING POWDER METALLURGY