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Douglas C. Edwards

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  • Sarnia, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for polymer production
    • Patent number 4,786,690
    • Issue date Nov 22, 1988
    • Polysar Limited
    • Douglas C. Edwards
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Dispersions of fibres in rubber
    • Patent number 4,659,754
    • Issue date Apr 21, 1987
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Low molecular weight polymer process
    • Patent number 4,614,772
    • Issue date Sep 30, 1986
    • Polysar Limited
    • Douglas C. Edwards
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Fibre containing polymers and process for production thereof
    • Patent number 4,588,780
    • Issue date May 13, 1986
    • Polysar Limited
    • Douglas C. Edwards
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Process for making vulcanized carbon black-reinforced bromobutyl ru...
    • Patent number 4,486,562
    • Issue date Dec 4, 1984
    • Polysar Limited
    • Erhardt Fischer
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Silica-polymer mixtures
    • Patent number 4,482,657
    • Issue date Nov 13, 1984
    • Polysar Limited
    • Erhardt Fischer
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Vulcanizates
    • Patent number 4,357,432
    • Issue date Nov 2, 1982
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Silica filled vulcanizates
    • Patent number 4,179,421
    • Issue date Dec 18, 1979
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Siliceous filled vulcanizates
    • Patent number 4,152,308
    • Issue date May 1, 1979
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Vulcanizates containing silica
    • Patent number 4,150,015
    • Issue date Apr 17, 1979
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Vulcanizates containing siliceous fillers
    • Patent number 4,150,014
    • Issue date Apr 17, 1979
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polymeric antioxidants
    • Patent number 4,138,389
    • Issue date Feb 6, 1979
    • Polysar Limited
    • Douglas C. Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Mineral oil compositions with an isobutylene polymer containing bou...
    • Patent number 4,101,434
    • Issue date Jul 18, 1978
    • Polysar Limited
    • Douglas Cameron Edwards
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Particulate oil-black masterbatch
    • Patent number 4,026,933
    • Issue date May 31, 1977
    • Polysar Limited
    • Douglas Cameron Edwards
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...