Patents by Inventor Vida Winans

Vida Winans 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).

  • Method of purification of glucose isomerase
    Patent number: 4256838
    Abstract: A process for purifying an enzyme such as glucose isomerase which comprises precipitating nucleic acids from a cell-free, heat-treated enzyme solution in a suitable buffer and chromatographing the supernatant on a cellulosic medium. Subsequent chromatography on a hydrophilic, molecular-sieve medium affords enzyme of about 90% purity.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: March 17, 1981
    Assignee: UOP Inc.
    Inventors: Denise M. Jackson, Yoshihisa Tsuda, Vida Winans
  • Method of purification of thermally stable enzymes
    Patent number: 4250263
    Abstract: A composition comprising intracellular or extracellular glucose isomerase may be purified by a method comprising heat treatment at a temperature from about 40.degree. C. to about 80.degree. C. The resultant enzyme solution, when utilized to prepare an immobilized enzyme system, is operationally equivalent to glucose isomerase purified by the traditional physico-chemical methods.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 10, 1981
    Assignee: UOP Inc.
    Inventor: Vida Winans