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Robert E. Grunstra

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  • Spring Lake, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ceramic casting core and method
    • Patent number 7,278,460
    • Issue date Oct 9, 2007
    • Howmet Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Ceramic casting core and method
    • Patent number 7,234,506
    • Issue date Jun 26, 2007
    • Howmet Research Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Ceramic casting core and method
    • Patent number 7,093,645
    • Issue date Aug 22, 2006
    • Howmet Research Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

  • Information Patent Application

    Fugitive core tooling and method
    • Publication number 20110094698
    • Publication date Apr 28, 2011
    • Howmet Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    CERAMIC CASTING CORE AND METHOD
    • Publication number 20070163745
    • Publication date Jul 19, 2007
    • Howmet Research Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    Glass-forming die and method
    • Publication number 20060213632
    • Publication date Sep 28, 2006
    • Howmet Corporation
    • Russell G. Vogt
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    Ceramic casting core and method
    • Publication number 20060201651
    • Publication date Sep 14, 2006
    • Howmet Research Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    CERAMIC CASTING CORE AND METHOD
    • Publication number 20060130994
    • Publication date Jun 22, 2006
    • Howmet Research Corporation
    • Robert E. Grunstra
    • B22 - CASTING POWDER METALLURGY