Ludwig Wilhelm

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Engen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for reclaiming bentonite and carbon particles from used fou...
- Patent number 5,163,562
- Issue date Nov 17, 1992
- Georg Fischer A.G.
- Ludwig Wilhelm
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method for the regenerative treatment of mainly clay-bound foundry...
- Patent number 5,115,985
- Issue date May 26, 1992
- Georg Fischer A.G.
- Franz Satmer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Arrangement and method for introducing waste material into a molten...
- Patent number 5,114,474
- Issue date May 19, 1992
- Georg Fischer AG
- Ludwig Wilhelm
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for the treatment of clay-bonded used casting sand
- Patent number 5,103,894
- Issue date Apr 14, 1992
- Georg Fischer A.G.
- Ludwig Wilhelm
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of flash butt welding high-carbon material, in particular no...
- Patent number 5,091,624
- Issue date Feb 25, 1992
- Georg Fischer A.G.
- Anton Alt
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Magnesium-treated, decarburizingly-annealed cast iron material
- Patent number 4,900,375
- Issue date Feb 13, 1990
- Georg Fischer A.G.
- Anton Alt
- C21 - METALLURGY OF IRON