Ludwig Walther

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Duren-Niederau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for controlling the discharge channel of a casting container...
- Patent number 4,896,801
- Issue date Jan 30, 1990
- Flo-Con Systems, Inc.
- Josef Lothmann
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Exact position feedback of double-acting power piston in hydraulic...
- Patent number 4,572,054
- Issue date Feb 25, 1986
- Zimmermann & Jansen GmbH
- Heinz D. Hannes
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Apparatus for the exact position feedback of a double-acting power...
- Patent number 4,478,129
- Issue date Oct 23, 1984
- Zimmermann & Jansen GmbH
- Heinz D. Hannes
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Method of controlling the nozzle damper of a metallurgical vessel
- Patent number 4,355,787
- Issue date Oct 26, 1982
- Zimmermann & Jansen GmbH
- Heinz D. Hannes
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Integrated slide gate valve
- Patent number 4,168,790
- Issue date Sep 25, 1979
- USS Engineers and Consultants, Inc.
- Josef Lothmann
- B22 - CASTING POWDER METALLURGY