TREA

THORN ELECTRICAL INDUSTRIES LIMITED

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  • LONDON, WC, GB
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Electric filament lamps
    • Patent number 4,366,411
    • Issue date Dec 28, 1982
    • Thorn Electrical Industries Limited
    • Kenneth B. Robinson
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Sealing of ceramic and cermet parts, sealing material therefor and...
    • Patent number 4,316,936
    • Issue date Feb 23, 1982
    • Thorn Electrical Industries Limited
    • Peter Hing
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Cap assemblies for lamps
    • Patent number 4,305,637
    • Issue date Dec 15, 1981
    • Thorn Electrical Industries Limited
    • Ben Grewcock
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Heating of dosing capsule
    • Patent number 4,278,908
    • Issue date Jul 14, 1981
    • Thorn Electrical Industries Limited
    • Basil Antonis
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fluorescent lamp with refractory metal electrode supports and glass...
    • Patent number 4,204,137
    • Issue date May 20, 1980
    • Thorn Electrical Industries Limited
    • Ashutosh Roy
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method of introducing fluorine into a lamp
    • Patent number 4,185,922
    • Issue date Jan 29, 1980
    • Thorn Electrical Industries Limited
    • John M. Rees
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge lamp with starter circuit
    • Patent number 4,165,475
    • Issue date Aug 21, 1979
    • Thorn Electrical Industries Limited
    • John C. Pegg
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Mirror lamp
    • Patent number 4,156,889
    • Issue date May 29, 1979
    • Thorn Electrical Industries Limited
    • Alex L. Halberstadt
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Lamps and discharge devices and materials therefor
    • Patent number 4,155,758
    • Issue date May 22, 1979
    • Thorn Electrical Industries Limited
    • David T. Evans
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Electric lamps and components and materials therefor
    • Patent number 4,155,757
    • Issue date May 22, 1979
    • Thorn Electrical Industries Limited
    • Peter Hing
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Inductor casing
    • Patent number 4,155,061
    • Issue date May 15, 1979
    • Thorn Electrical Industries Limited
    • Tony C. Cook
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Adhesives
    • Patent number 4,145,332
    • Issue date Mar 20, 1979
    • Thorn Electrical Industries Limited
    • George E. Coxon
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Electrical discharge lamp
    • Patent number 4,135,110
    • Issue date Jan 16, 1979
    • Thorn Electrical Industries Limited
    • Alan G. Chalmers
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Inductor structures for electrical discharge lamp circuits
    • Patent number 4,105,931
    • Issue date Aug 8, 1978
    • Thorn Electrical Industries Limited
    • Eric H. Pritchard
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Suppression of color fringing in lamps
    • Patent number 4,100,594
    • Issue date Jul 11, 1978
    • Thorn Electrical Industries Limited
    • Allan Victor Stewart Gould
    • F21 - LIGHTING
  • Information Patent Grant

    Electric lamps and their production
    • Patent number 4,099,081
    • Issue date Jul 4, 1978
    • Thorn Electrical Industries Limited
    • Thomas Somner Ainsworth
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method of preparing cerium and terbium activated aluminate phosphors
    • Patent number 4,096,088
    • Issue date Jun 20, 1978
    • Thorn Electrical Industries Limited
    • Peter Whitten Ranby
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Manufacture of electric lamps
    • Patent number 4,090,101
    • Issue date May 16, 1978
    • Thorn Electrical Industries Limited
    • John Michael Rees
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Tungsten halogen lamp
    • Patent number 4,027,189
    • Issue date May 31, 1977
    • Thorn Electrical Industries Limited
    • James Richard Coaton
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Cerium and terbium activated aluminate phosphors
    • Patent number 4,026,816
    • Issue date May 31, 1977
    • Thorn Electrical Industries Limited
    • Peter Whitten Ranby
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Method of electrode mounting in high-pressure sodium discharge lamp
    • Patent number 4,019,078
    • Issue date Apr 19, 1977
    • Thorn Electrical Industries Limited
    • Norman Burgess
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electric lamps mounted in a flanged cap
    • Patent number 4,012,658
    • Issue date Mar 15, 1977
    • Thorn Electrical Industries Limited
    • Arthur Samuel Vause
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Arc tube for high-pressure mercury/metal halide lamp
    • Patent number 4,001,623
    • Issue date Jan 4, 1977
    • Thorn Electrical Industries Limited
    • Donald Arthur Howles
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge lamp ballast circuits
    • Patent number 3,983,449
    • Issue date Sep 28, 1976
    • Thorn Electrical Industries Limited
    • Peter Adrian Dear
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Discharge lamp component
    • Patent number 3,983,440
    • Issue date Sep 28, 1976
    • Thorn Electrical Industries Limited
    • Kenneth Scott
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Lamp mounting assembly
    • Patent number 3,944,808
    • Issue date Mar 16, 1976
    • Thorn Electrical Industries Limited
    • Arthur Samuel Vause
    • F21 - LIGHTING
  • Information Patent Grant

    Cold-light mirror
    • Patent number 3,944,320
    • Issue date Mar 16, 1976
    • Thorn Electrical Industries Limited
    • William James McLintic
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    72364597 - Q-FILE
    • Serial number 72364597
    • Registration number 967399
    • Filing date Jul 7, 1970
    • THORN ELECTRICAL INDUSTRIES LIMITED
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    72331252 - THORN
    • Serial number 72331252
    • Registration number 940867
    • Filing date Jun 27, 1969
    • THORN ELECTRICAL INDUSTRIES LIMITED
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments