Patents by Inventor Katsuyuki Tomonaga

Katsuyuki Tomonaga 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).

  • Electric bicycle
    Patent number: D614084
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: April 20, 2010
    Assignees: Sanyo Electric Co., Ltd., Sanyo Consumer Electronics Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Electric bicycle
    Patent number: D621302
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: August 10, 2010
    Assignees: Sanyo Electric Co., Ltd., Sanyo Consumer Electronics Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Electric bicycle
    Patent number: D621303
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: August 10, 2010
    Assignees: Sanyo Electric Co., Ltd., Sanyo Consumer Electronics Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Hub motor for electric bicycle
    Patent number: D625333
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: October 12, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Battery for an electric bicycle
    Patent number: D632643
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: February 15, 2011
    Assignees: Sanyo Electric Co., Ltd., Sanyo Consumer Electronics Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Controller for electric bicycle
    Patent number: D637528
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 10, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Battery for an electric bicycle
    Patent number: D638787
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 31, 2011
    Assignees: Sanyo Electric Co., Ltd., Sanyo Consumer Elctronics Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Controller for battery
    Patent number: D675160
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: January 29, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yosuke Tanaka, Katsuyuki Tomonaga
  • Air purifier
    Patent number: D984622
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: April 25, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Jura Sawada, Katsuyuki Tomonaga