Patents by Inventor John K. Hemphill

John K. Hemphill 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).

  • Process for regenerating soybeans
    Patent number: 4837152
    Abstract: The present invention relates to the regeneration of soybeans. The process comprises the steps of inducing callus and embryoid formation from tissue of a soybean plant, maturing the embryoids, germinating the embryoids, and forming roots on the germinated embryoids.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: June 6, 1989
    Assignee: Sungene Technologies Corporation
    Inventors: John K. Hemphill, Claire A. Warshaw
  • Process for regenerating soybeans
    Patent number: 4684612
    Abstract: The present invention relates to the regeneration of soybeans. The process comprises the steps of:(a) culturing tissue obtained from a soybean plant on a first medium comprising mineral salts, vitamins, sucrose and a hormone in an amount sufficient to ensure callus and embryoid formation;(b) subculturing the embryoids on a second medium comprising mineral salts, vitamins, sucrose and a hormone in an amount sufficient to ensure embryoid maturation;(c) subculturing the embryoids on a third medium comprising mineral salts, vitamins, sucrose and a hormone in an amount sufficient to ensure shoot formation, and(e) subculturing the shoots on a fourth medium comprising mineral salts, vitamins and sucrose in an amount sufficient to ensure root formation.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: August 4, 1987
    Assignee: Sungene Technologies Corporation
    Inventors: John K. Hemphill, Eric J. Eikenberry