Patents by Inventor Richard D. Medwid

Richard D. Medwid 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).

  • Carotenoid producing culture using Nespongiococcum excentricum
    Patent number: 5437997
    Abstract: A culture for the production of xanthophylls comprising Nospongiococcum excentricum ATCC 40335 and mutants thereof. The culture having a dry cell weight xanthophyll content of at least about 0.65% and being capable of growing to a cell density of greater than about 40 grams per liter. The culture also comprising: carbon, phosphate, sulfate, iron, magnesium, and nitrogen.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: August 1, 1995
    Assignee: Universal Foods Corporation
    Inventors: Hans H. Liao, Richard D. Medwid, Donald L. Heefner, Kathleen S. Sniff, Randal A. Hassler, Michael J. Yarus
  • Zeaxanthin producing strains of Neospongiococcum Excentricum
    Patent number: 5360730
    Abstract: The present invention is directed toward a process for producing zeaxanthin which includes mutating algal microorganisms, selecting from said mutated microorganisms a microorganism capable of producing zeaxanthin, culturing the selected microorganism in an effective medium to produce zeaxanthin, and recovering zeaxanthin produced by the selected microorganism. The present invention also provides microorganisms capable of producing zeaxanthin, formulations containing zeaxanthin produced by the disclosed process and the use of such formulations to enhance pigmentation and to reduce damage caused by reactive oxygen species and phototoxic molecules.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: November 1, 1994
    Assignee: Universal Foods Corporation
    Inventors: Steve A. Orndorff, Elizabeth A. Campbell, Richard D. Medwid