Patents by Inventor Katsuichi Yoshinaga

Katsuichi Yoshinaga 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
  • Citrus tree `Amakusa`
    Patent number: PP9550
    Abstract: Disclosed is a citrus tree having a moderate spreading vigor, and bearing medium size and round shaped fruit with a deep orange skin color and a low acidity. This new and distinct variety of citrus tree is an early maturing citrus cultivar, is fairly resistant to diseases, was bred by a crossing of "T-378" (the seed parent) and "Page" (the pollen parent), bears good quality fruit, and is an excellent citrus cultivar.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: May 14, 1996
    Assignee: Fruit Tree Research Station, Ministry of Agriculture, Forestry and Fisheries
    Inventors: Ryoji Matsumoto, Masashi Yamamoto, Yoshi Yamada, Naomi Okudai, Hidekazu Ikemiya, Kensuke Asada, Iwao Oiyama, deceased, Hirono Murata, Katsuichi Yoshinaga, Meisaku Koizumi, Toru Iwanami