Patents by Inventor Kwei C. Chao

Kwei C. Chao 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).

  • Yeast autolysis process
    Patent number: 4218481
    Abstract: Yeast autolysis is enhanced by the addition of certain exogenous enzymes to the yeast slurry at concentrations of from about 0.01-1.0 weight percent, said enzymes being selected from the group consisting of papain, ficin, bromelain, pancreatin, and aspergillus protease.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: August 19, 1980
    Assignee: Standard Oil Company (Indiana)
    Inventors: Kwei C. Chao, Edward F. McCarthy, George A. McConaghy
  • Process for improving the functional properties of protein material
    Patent number: 4178391
    Abstract: Protein-containing materials are treated at specified temperature and pH conditions for a suitable length of time to yield products which replace material such as egg solids and nonfat dry milk.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: December 11, 1979
    Assignee: Standard Oil Company a corporation of Indiana
    Inventors: Kwei C. Chao, John A. Ridgway, Jr., Philip G. Schnell, Jacqueline H. Pearce
  • Method for modifying the flavor of yeast
    Patent number: 4166135
    Abstract: The flavor of a yeast product is modified by subjecting a slurry of fresh yeast cells to aeration with an oxygen-containing gas for from less than about 1 to about 120 minutes at a temperature of from about 45 to about150.degree. C. The resulting yeast product has a bland, slightly sweet, mushroom- and toasted almond-like flavor and a cocoa-like aroma.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: August 28, 1979
    Assignee: Standard Oil Company (Indiana)
    Inventors: Kwei C. Chao, John A. Ridgway
  • Method for improving the efficiency of protein extraction from yeast cells
    Patent number: 4080260
    Abstract: Isolating protein from yeast cells by alkaline extraction is enhanced by growing a continuous culture of yeasts at the lowest possible dilution rate (space velocity) where the cell yield is not significantly affected and/or by aging the continuous yeast culture in a second stage of continuous fermentation having a residence time from 2 to 4 hours and a pH of from 4 to 10.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: March 21, 1978
    Assignee: Standard Oil Company (Indiana)
    Inventor: Kwei C. Chao
  • Process for preparing functional yeast proteins using alkaline conditions
    Patent number: 4079048
    Abstract: Functional yeast protein products with good thermogelability, emulsification capacity, foaming ability, solubility, and whippability are prepared by an alkali extraction of whole yeast cells preceded by a hot water extraction and/or a dilute alkaline extraction. These products are good substitutes for either casein, sodium caseinate, or egg white, and can also be used in making stabilized acidic protein beverages.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: March 14, 1978
    Assignee: Standard Oil Company (Indiana)
    Inventor: Kwei C. Chao
  • Process for preparing high yields of single cell products having reduced purine content and high nutritive value
    Patent number: 3947605
    Abstract: Single-cell protein material, having low purine content and high nutritive value, is obtained in high yield by subjecting aqueous cell creams to temperature, pH adjustment, and washing treatments for controlled periods of time. This process can involve methionine or cystine enrichment of the products produced thereby.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: March 30, 1976
    Assignee: Standard Oil Company
    Inventor: Kwei C. Chao