Patents by Inventor Hirofumi Kokubun

Hirofumi 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
  • NUTRIENT AMOUNT DETERMINATION DEVICE, NUTRIENT AMOUNT DETERMINATION METHOD, AND COMPUTER READABLE MEDIUM STORING NUTRIENT AMOUNT DETERMINATION PROGRAM
    Publication number: 20220192083
    Abstract: A nutrient amount determination device acquires number-of-users information indicating a number of users who use a sports facility within a predetermined period, the sports facility having lawn on which a sport is played. The nutrient amount determination device determines based on the acquired number-of-users information an application amount of at least one nutrient to be applied to the lawn of the sports facility by fertilization within the predetermined period.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 23, 2022
    Applicant: Rakuten Group, Inc.
    Inventors: Masahiro KUWAHARA, Takahiro IIZUKA, Hirofumi KOKUBUN, Shuichi SHINKAWA
  • FLIGHT SYSTEM, FLIGHT ROUTE DETERMINATION METHOD, AND FLIGHT ROUTE DETERMINATION DEVICE
    Publication number: 20220092990
    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: Application
    Filed: July 23, 2021
    Publication date: March 24, 2022
    Applicant: Rakuten Group, Inc.
    Inventors: Takahiro IIZUKA, Hirofumi Kokubun, Kenichi Lee