Patents by Inventor Toshifumi Ohgawara

Toshifumi Ohgawara 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).

  • Somatic hybrids of Rutaceae plants
    Patent number: 4940836
    Abstract: Somatic hybrids of Rutaceae plants were obtained by allowing the protoplasts from embryogenic cells of a Rutaceae plant, which are of the nucellar origin, resistant to fusion treatment, and have a high proliferation activity, to fuse with the protoplasts of another Rutaceae plant having no proliferation activity, and then cultivating the fused protoplasts in a medium not containing a phytohormone but containing a saccharide in a concentration suitable for the selective embryogenesis of the hybrid cells.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: July 10, 1990
    Assignees: Director General of Fruit Tree Research Station Ministry of Agriculture, Forestry and Fisheries, Kikkoman Corporation
    Inventors: Shigetaka Ishii, Toshifumi Ohgawara, Shozo Kobayashi, Iwao Oiyama, Katsuichi Yoshinaga