Patents by Inventor Ko Isozaki

Ko Isozaki 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).

  • Hole punch for stationery
    Patent number: D598957
    Type: Grant
    Filed: May 26, 2008
    Date of Patent: August 25, 2009
    Assignee: Plus Stationery Corporation
    Inventors: Ko Isozaki, Megumi Tanabe
  • Hole punch for stationery
    Patent number: D612890
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: March 30, 2010
    Assignee: Plus Stationery Corporation
    Inventors: Ko Isozaki, Megumi Tanabe
  • Paper punch
    Patent number: D619175
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 6, 2010
    Assignee: Plus Stationery Corp.
    Inventors: Ko Isozaki, Megumi Tanabe
  • Water heater for space heating
    Patent number: D653320
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: January 31, 2012
    Assignee: Takagi Industrial Co., Ltd.
    Inventors: Hiromasa Watanabe, Yoshihiro Kubota, Ko Isozaki
  • Blood collecting device
    Patent number: D879950
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: March 31, 2020
    Assignee: ASAHI POLYSLIDER COMPANY, LIMITED
    Inventors: Hirokazu Imori, Ko Isozaki, Kei Suzuki
  • Blood collecting device
    Patent number: D884879
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 19, 2020
    Assignee: Asahi Polyslider Company, Limited
    Inventors: Hiroshi Hanafusa, Ko Isozaki, Kei Suzuki
  • Lancet
    Patent number: D1010823
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: January 9, 2024
    Assignee: Asahi Polyslider Company, Limited
    Inventors: Junya Hirata, Ko Isozaki, Shiko Morita