David E. Lenhart

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Pomeroy, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Powder metal forging and method and apparatus of manufacture
- Patent number 9,248,503
- Issue date Feb 2, 2016
- GKN Sinter Metals, LLC
- Alfred J. Chiesa
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Powder metal forging and method and apparatus of manufacture
- Patent number 8,806,912
- Issue date Aug 19, 2014
- GKN Sinter Metals, LLC
- Alfred J. Chiesa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Powder forged differential gear
- Patent number 8,517,884
- Issue date Aug 27, 2013
- GKN Sinter Metals, LLC
- Timothy E. Geiman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Variable Diffusion Carburizing Method
- Publication number 20220213584
- Publication date Jul 7, 2022
- David E. Lenhart
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Powder Forged Differential Gear
- Publication number 20110059822
- Publication date Mar 10, 2011
- Timothy E. Geiman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
POWDER METAL FORGING AND METHOD AND APPARATUS OF MANUFACTURE
- Publication number 20100083782
- Publication date Apr 8, 2010
- Alfred J. Cheisa
- B22 - CASTING POWDER METALLURGY