Patents by Inventor Yong D. Hang

Yong D. Hang 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).

  • Direct fermentation of corn to L(+)-lactic acid by Rhizopus oryzae
    Patent number: 4963486
    Abstract: L(+)-lactic acid is produced in high yield by a direct one step fermentation of renewable biomass such as ground corn using Rhizopus oryzae in the presence of calcium carbonate. A kilogram of crushed corn yields over 350 grams high purity L(+)-lactic acid.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: October 16, 1990
    Assignee: Cornell Research Foundation, Inc.
    Inventor: Yong D. Hang
  • Grape pomace as substrate for microbial production of citric acid
    Patent number: 4791058
    Abstract: It has now been found that grape pomace can be employed as a substrate for citric acid production using Aspergillus niger as the fermentation agent.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: December 13, 1988
    Assignee: Cornell Research Foundation, Inc.
    Inventor: Yong D. Hang
  • Apple pomace as substrate for microbial production of citric acid
    Patent number: 4767705
    Abstract: Apple pomace, the residue left from juice extraction, can be employed as a substrate for citric acid production using Aspergillus niger as the fermentation agent.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: August 30, 1988
    Assignee: Cornell Research Foundation, Inc.
    Inventor: Yong D. Hang