Patents by Inventor W. Geoffrey Haigh

W. Geoffrey Haigh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High purity beta-carotene
    Patent number: 5310554
    Abstract: Compositions of high-purity natural beta-carotene and of the 9-cis isomer of beta-carotene are provided, as are methods for the production of these compositions from plant matter, conveniently algae such as Dunaliella species. Typically, the compositions contain at least about 5% 9-cis beta-carotene and less than or equal to 40% of all-trans-beta-carotene, and in some cases may contain 75% 9-cis beta-carotene or higher. The compositions are suitable for administration to humans or other animals, particularly for oral delivery, in a variety of formulations and dosages as pharmaceutical agents or as dietary supplements.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: May 10, 1994
    Assignee: Natural Carotene Corporation
    Inventor: W. Geoffrey Haigh