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Donald D. Bretches

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  • Waynesboro, VA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    High-uniformity spandex and process for making spandex
    • Patent number 6,503,996
    • Issue date Jan 7, 2003
    • DuPont Dow Elastomers L.L.C.
    • Donald D. Bretches
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Biaxially oriented ordered polymer films
    • Patent number 6,132,668
    • Issue date Oct 17, 2000
    • Foster-Miller, Inc.
    • Dirk M. Baars
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Fiber from polyether-based spandex
    • Patent number 4,973,647
    • Issue date Nov 27, 1990
    • E. I. Du Pont de Nemours and Company
    • Donald D. Bretches
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    Forming biaxially oriented ordered polymer films
    • Patent number 4,973,442
    • Issue date Nov 27, 1990
    • Foster-Miller Inc.
    • Andrew C. Harvey
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Biaxially oriented ordered polymer films
    • Patent number 4,963,428
    • Issue date Oct 16, 1990
    • Foster-Miller, Inc.
    • Andrew C. Harvey
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Biaxially oriented ordered polybenzothiazole film
    • Patent number 4,939,235
    • Issue date Jul 3, 1990
    • Foster-Miller, Inc.
    • Andrew C. Harvey
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL