Patents by Inventor Yoshihisa Minagawa

Yoshihisa Minagawa 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).

  • Printer
    Patent number: D723100
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: February 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshihisa Minagawa
  • Printer
    Patent number: D895003
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: September 1, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihisa Minagawa, Masateru Kohno
  • Ink cartridge
    Patent number: D915508
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: April 6, 2021
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshihisa Minagawa
  • Ink cartridge
    Patent number: D916959
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: April 20, 2021
    Assignee: Ricoh Company, Ltd
    Inventor: Yoshihisa Minagawa
  • Image forming unit for printer
    Patent number: D955470
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: June 21, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaaki Kabumoto, Masateru Kohno, Yoshihisa Minagawa, Masahiro Kurita, Toshihiro Hamamura, Kanako Hirasawa, Shoichi Hibi
  • Image forming unit for printer
    Patent number: D956137
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: June 28, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaaki Kabumoto, Masateru Kohno, Yoshihisa Minagawa, Masahiro Kurita, Toshihiro Hamamura, Kanako Hirasawa, Shoichi Hibi
  • Printer
    Patent number: D972008
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: December 6, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaaki Kabumoto, Masateru Kohno, Yoshihisa Minagawa, Masahiro Kurita, Toshihiro Hamamura, Kanako Hirasawa, Shoichi Hibi
  • Printer
    Patent number: D1013774
    Type: Grant
    Filed: January 21, 2022
    Date of Patent: February 6, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shoichi Hibi, Yoshihisa Minagawa, Ryota Yano, Shunsuke Kohda, Risa Ogawa, Kaede Kurosawa