Patents by Inventor Kenichi Kokubun

Kenichi Kokubun 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).

  • Flight system, flight route determination method, and flight route determination device
    Patent number: 11990051
    Abstract: A flight system S acquires contact sensing data obtained by a contact sensing of a soil sensor unit 1 embedded in advance in the ground, and determines a flight route for an UAV 2 to execute a predetermined task on the basis of the contact sensing data.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: May 21, 2024
    Assignee: Rakuten Group, Inc.
    Inventors: Takahiro Iizuka, Hirofumi Kokubun, Kenichi Lee
  • Photoresist material
    Patent number: 4504631
    Abstract: The photoresist material comprises a polymer having chloromethyl groups introduced therein and containing 2-isopropenylnaphthalene as one component, an average substitution degree of the chloromethyl groups based on the polymer is within a range of 0.2 to 5.The photoresist material has a high glass transition point, a high sensitivity to radiation and an excellent dry etching resistance, whereby it is suitably used for the manufacture of a semiconductor element using radiation and provides a good resolution on etching.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: March 12, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideaki Doi, Kenichi Kokubun, Teruo Sakagami, Naohiro Murayama