Patents by Inventor Kenneth G. Spencer

Kenneth G. Spencer 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).

  • Pigmentation supplements for animal feed compositions
    Patent number: 4871551
    Abstract: Pigment compositions useful for supplementing marine animal feeds comprise comminuted Haematococcus cells treated to degradation of carotenoids, typically by coating or by combination with an anti-oxidant. Encysted Haematococcus cells are ground at cryogenic temperatures, typically by combining the cells with liquid nitrogen in a suitable impact mill. The resulting powder has an average particle size below about 5 .mu.m. Usually, the Haematococcus will be grown in large-scale culture ponds under controlled conditions.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: October 3, 1989
    Assignee: Microbio Resources, Inc.
    Inventor: Kenneth G. Spencer