Patents by Inventor Keigo Doi

Keigo Doi 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).

  • Patent number: 6563024
    Abstract: The present invention discloses a process for transforming mature trees of Eucalyptus plants comprising: induction adventitious shoots from segments of the explant obtained from an adult tree of a Eucalyptus plant, preculturing the adventitious shoots in infection induction medium, infecting the adventitious shoots subjected to infection induction treatment with infection medium containing Agrobacterium tumefaciens, and rotary-culturing the infected explant segments in sterilization medium containing antibiotic; whereby sterilizing and forming transgenic calli, which regenerate transgenic plants by way of formation of shoot primordia by rotary-culturing under illumination.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: May 13, 2003
    Assignee: OJI Paper Co., Ltd.
    Inventors: Tetsu Kawazu, Keigo Doi, Keiko Kondo
  • Patent number: 5310673
    Abstract: A process for the mass propagation of a woody plant comprising the steps of removing a shoot tip from the woody plant, transplanting the shoot tip to an artificial medium containing inorganic salts and plant growth hormones as main ingredients, and rotary-culturing the shoot tip under illumination to form shoot primordia, and stationary-culturing the shoot primordia in a liquid medium to regenerate shoots. Further, a process for the regeneration of plants comprising the steps of preparing a shoot primordium by rotary-culturing a shoot tip of a plant, treating the shoot primordium with at least one enzyme to prepare a protoplast, culturing the protoplast in an artificial medium containing plant hormones and inorganic and organic salts as main ingredients to form a callus, and incubating the callus in a regeneration medium to regenerate a shoot; plus intermediate materials of the process, and processes for production of the intermediate materials.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: May 10, 1994
    Assignee: Oji Paper Company, Ltd.
    Inventors: Masaru Shibata, Kazuya Ito, Keigo Doi, Masaki Ito