Patents by Inventor Huei-Hsiung Yang

Huei-Hsiung Yang 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).

  • Processes for in vivo production of astaxanthin and phaffia rhodozyma yeast of enhanced astaxanthin content
    Patent number: 7723066
    Abstract: An economical process for in vivo production of the pigment astaxanthin, and particularly a process for enhancing astaxanthin content of cultures of microorganisms of genus Phaffia, the process comprising culturing a microorganism of genus Phaffia in a nutrient medium containing an antibiotic, a cytochrome B inhibitor, or a terpenoid synthetic pathway inhibitor, cultivating surviving pigment enhanced microorganisms, and harvesting the yeast.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: May 25, 2010
    Assignee: Igene Biotechnology, Inc.
    Inventors: Eric A. Johnson, Huei-hsiung Yang, Beril Geldiay-Tuncer, William T. Hall, David Schreiber, Kwok Ho
  • Processes for in vivo production of astaxanthin and phaffia rhodozyma yeast of enhanced astaxanthin content
    Patent number: 5356809
    Abstract: An economical process for in vivo production of the pigment astaxanthin, and particularly a process for enhancing astaxanthin content of cultures of microorganisms of genus Phaffia, the process comprising culturing a microorganism of genus Phaffia in a nutrient medium containing an antibiotic, a cytochrome B inhibitor, or a terpenoid synthetic pathway inhibitor, cultivating surviving pigment enhanced microorganisms, and harvesting the yeast.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: October 18, 1994
    Assignee: Igene Biotechnology, Inc.
    Inventors: Eric A. Johnson, Huei-hsiung Yang, Beril Geldiay-Tuncer, William T. Hall, David Schreiber, Kwok Ho
  • Processes for in vivo production of astaxanthin and phaffia rhodozyma yeast of enhanced astaxanthin content
    Patent number: 5182208
    Abstract: An economical process for in vivo production of the pigment astaxanthin, and particularly a process for enhancing astaxanthin content of cultures of microorganisms of genus Phaffia, the process comprising culturing a microorganism of genus Phaffia in a nutrient medium containing an antibiotic, a cytochrome B inhibitor, or a terpenoid synthetic pathway inhibitor, cultivating surviving pigment enhanced microorganisms, and harvesting the yeast.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: January 26, 1993
    Assignee: Igene Biotechnology, Inc.
    Inventors: Eric A. Johnson, David Schreiber, Kwok P. Ho, William T. Hall, Huei-hsiung Yang, Beril Geldiay-Tuncer
  • Production of phage and phage-associated lysin
    Patent number: 4859597
    Abstract: A method for producing a lysin-free phage inoculum, which comprises:(a) inoculating a growing Streptococcal culture with phage,(b) incubating the culture for a plurality of lytic cycles of phage until the cells are completely lysed to obtain a lysate, and(c) removing cell debris and free lysin from the lysate to form a lysin-free phage suitable for use as an inoculum.A method for producing lysin is also disclosed.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: August 22, 1989
    Assignee: Igene Biotechnology, Inc.
    Inventors: Huei-Hsiung Yang, Stephen F. Hiu, John L. Harris