Robert S. L. Andrews

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Fort Worth, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for controlling the collapsibility of foundry molds and cores
- Patent number 5,318,092
- Issue date Jun 7, 1994
- Robert S. L. Andrews
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for controlling the oxidation and calcination of waste found...
- Patent number 5,251,684
- Issue date Oct 12, 1993
- GMD Engineered Systems, Inc.
- Robert S. L. Andrews
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Method for separating hazardous substances in waste foundry sands
- Patent number 4,978,076
- Issue date Dec 18, 1990
- GMD Engineered Systems, Inc.
- Robert S. L. Andrews
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of reclaiming foundry sand
- Patent number 4,549,698
- Issue date Oct 29, 1985
- Robert S. L. Andrews
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for reclaiming foundry sand
- Patent number 4,508,277
- Issue date Apr 2, 1985
- Robert S. L. Andrews
- B22 - CASTING POWDER METALLURGY