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Robert I. Hirshburg

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  • Hendersonville, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual geometry for slide-bead coating
    • Patent number 5,458,925
    • Issue date Oct 17, 1995
    • E. I. Du Pont de Nemours and Company
    • Robert I. Hirshburg
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Lip surface geometry for slide bead coating
    • Patent number 5,380,365
    • Issue date Jan 10, 1995
    • E. I. Du Pont de Nemours and Company
    • Robert I. Hirshburg
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Coating lip geometry for slide bead coating
    • Patent number 5,332,440
    • Issue date Jul 26, 1994
    • E. I. Du Pont de Nemours and Company
    • Robert I. Hirshburg
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Coating method
    • Patent number 4,443,504
    • Issue date Apr 17, 1984
    • E. I. Du Pont de Nemours and Company
    • Richard S. Burket
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY