TREA

Dufaylite Developments Limited

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Patents Grantslast 30 patents

  • Information Patent Grant

    Intumescent materials
    • Patent number 4,649,089
    • Issue date Mar 10, 1987
    • Dufaylite Developments Limited
    • Peter J. Thwaites
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Slicing web material
    • Patent number 4,340,441
    • Issue date Jul 20, 1982
    • Dufaylite Developments Limited
    • Peter J. Thwaites
    • B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
  • Information Patent Grant

    Structural cellular materials
    • Patent number 4,202,253
    • Issue date May 13, 1980
    • Dufaylite Developments Limited
    • Peter John Thwaites
    • B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
  • Information Patent Grant

    Slicing web material
    • Patent number 4,187,138
    • Issue date Feb 5, 1980
    • Dufaylite Developments Ltd.
    • Peter J. Thwaites
    • B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
  • Information Patent Grant

    Packaging method and apparatus
    • Patent number 4,149,355
    • Issue date Apr 17, 1979
    • Dufaylite Developments Limited
    • Frederick W. Clegg
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Fire-protective cellular service ducting
    • Patent number 4,093,818
    • Issue date Jun 6, 1978
    • Dufaylite Developments Limited
    • Peter John Thwaites
    • E04 - BUILDING
  • Information Patent Grant

    Structural cellular materials
    • Patent number 4,033,251
    • Issue date Jul 5, 1977
    • Dufaylite Developments Limited
    • Peter John Thwaites
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Honeycomb materials
    • Patent number 3,996,087
    • Issue date Dec 7, 1976
    • Dufaylite Developments Limited
    • George May
    • B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
  • Information Patent Grant

    Honeycomb materials
    • Patent number 3,950,215
    • Issue date Apr 13, 1976
    • Dufaylite Developments, Ltd.
    • Desmond Deverell White
    • B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
  • Information Patent Grant

    Apparatus for lapping a continuous length of honeycomb material
    • Patent number 3,942,300
    • Issue date Mar 9, 1976
    • Dufaylite Developments Limited
    • Desmond Deverell White
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Trademarklast 30 trademarks

  • Information Trademark

    73378491 - MODAC
    • Serial number 73378491
    • Registration number 1315400
    • Filing date Nov 8, 1982
    • Dufaylite Developments Limited
    • 7 - Machines and machine tools
  • Information Trademark

    73393571 - DUFAYLITE
    • Serial number 73393571
    • Registration number 1282403
    • Filing date Sep 29, 1982
    • Dufaylite Developments Limited
    • 16 - Paper, cardboard and goods made from these materials, not included in other classes
  • Information Trademark

    72030996 - DUFAYLITE
    • Serial number 72030996
    • Registration number 666894
    • Filing date May 29, 1957
    • DUFAYLITE DEVELOPMENTS LIMITED
    • 16 - Paper, cardboard and goods made from these materials, not included in other classes