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David H. Birtwistle

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  • Wirral, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hair care composition
    • Patent number 5,302,322
    • Issue date Apr 12, 1994
    • Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Shampoo composition
    • Patent number 5,186,928
    • Issue date Feb 16, 1993
    • Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Topical composition comprising a mixture of particular di-alkyl or...
    • Patent number 5,180,579
    • Issue date Jan 19, 1993
    • Chesebrough-Pond's USA Co., division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Topical composition comprising mono- and di-alkyl or alkenyl phosph...
    • Patent number 5,139,781
    • Issue date Aug 18, 1992
    • Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Topical composition
    • Patent number 5,093,112
    • Issue date Mar 3, 1992
    • Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Topical composition
    • Patent number 5,078,991
    • Issue date Jan 7, 1992
    • Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Topical composition
    • Patent number 5,015,471
    • Issue date May 14, 1991
    • Chesebrough-Pond's USA Co., division of Conopco, Inc.
    • David H. Birtwistle
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE