Robert E. Downing

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Toledo, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Web reinforced expendable core
- Patent number 5,236,034
- Issue date Aug 17, 1993
- Doehler-Jarvis Limited Partnership
- John P. Cestaro
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Core box with large diameter vents and plugs
- Patent number 5,115,856
- Issue date May 26, 1992
- Doehler-Jarvis Limited Partnership
- Robert E. Downing
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of forming a die casting with coated expendable cores
- Patent number 4,961,458
- Issue date Oct 9, 1990
- Farley, Inc.
- Robert E. Downing
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for washing a casting core
- Patent number 4,951,731
- Issue date Aug 28, 1990
- Farley, Inc.
- Robert E. Downing
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Coated expendable cores for die casting dies
- Patent number 4,867,225
- Issue date Sep 19, 1989
- Farley, Inc.
- Robert E. Downing
- B22 - CASTING POWDER METALLURGY