TREA

Colin Holroyd

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  • Lancashire, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Carbon black incorporation in polymeric material
    • Patent number 5,626,806
    • Issue date May 6, 1997
    • Holroyd Associates Limited
    • Eric Holroyd
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tire manufacture
    • Patent number 5,201,975
    • Issue date Apr 13, 1993
    • Bridgestone/Firestone Inc.
    • Colin Holroyd
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Manufacture of flexible reinforced polymeric article
    • Patent number 5,053,098
    • Issue date Oct 1, 1991
    • Bridgestone/Firestone Inc.
    • David J. B. Perkins
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Vehicle tire mold
    • Patent number 4,992,035
    • Issue date Feb 12, 1991
    • Apsley Metals Limited
    • Eric Holroyd
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method of manufacture of tire using an annular mold to form a multi...
    • Patent number 4,983,239
    • Issue date Jan 8, 1991
    • Apsley Metals Limited
    • Eric Holroyd
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method of manufacture of tires and apparatus therefore
    • Patent number 4,921,673
    • Issue date May 1, 1990
    • Apsley Metals Limited
    • Eric Holroyd
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Moulding apparatus
    • Patent number 4,618,466
    • Issue date Oct 21, 1986
    • Apsley Metals Limited
    • James N. McGlashen
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL