Patents by Inventor Willis R. Littke

Willis R. Littke 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).

  • Manufactured seed with enhanced pre-emergence survivability
    Patent number: 5701699
    Abstract: The present invention provides manufactured seeds and related compositions and methods. The manufactured seeds comprise a unit of a totipotent plant tissue, preferably in contact with a hydrated gel. Preferably, the shoot of the germinating embryo is enclosed in a shoot restraint that is resistant to penetration by the growing shoot. The manufactured seed may be at least partially surrounded by a protective manufactured seed coat. The gel or the seed coat can include various additives, such as nutrients, antibiotics, or plant growth regulators.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: Weyerhaeuser Company
    Inventors: William C. Carlson, Jeffrey E. Hartle, Kathy Salatas, Amy Harris, Willis R. Littke