TREA

Frederick H. Howell

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  • Atherton, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Substituted anthraquinones and use thereof in epoxy resins
    • Patent number 4,924,015
    • Issue date May 8, 1990
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Phenols and their production
    • Patent number 4,904,815
    • Issue date Feb 27, 1990
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Hydroquinones
    • Patent number 4,835,323
    • Issue date May 30, 1989
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Aminocyclohexyl-substituted, branch alkylamines
    • Patent number 4,716,248
    • Issue date Dec 29, 1987
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Ortho nitroanilines and a process for their production
    • Patent number 4,700,003
    • Issue date Oct 13, 1987
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Resorcinol compounds
    • Patent number 4,661,601
    • Issue date Apr 28, 1987
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    New diamines and a process for their production
    • Patent number 4,647,699
    • Issue date Mar 3, 1987
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Hydroquinone ether compounds
    • Patent number 4,631,252
    • Issue date Dec 23, 1986
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Hydroquinone ether compounds
    • Patent number 4,616,082
    • Issue date Oct 7, 1986
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Benzo-1,4-quinones
    • Patent number 4,608,435
    • Issue date Aug 26, 1986
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Aminoalkyl aromatic compounds and their production
    • Patent number 4,554,379
    • Issue date Nov 19, 1985
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Hydroquinone ether compounds
    • Patent number 4,549,015
    • Issue date Oct 22, 1985
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Hydroquinones
    • Patent number 4,484,000
    • Issue date Nov 20, 1984
    • Ciba-Geigy AG
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Alkylation and aralkylation of aromatic amines
    • Patent number 4,436,936
    • Issue date Mar 13, 1984
    • Ciba-Geigy Corporation
    • Frederick H. Howell
    • C07 - ORGANIC CHEMISTRY