Patents by Inventor Hisaji Tanaka

Hisaji Tanaka 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).

  • Mop carrier
    Patent number: 4392269
    Abstract: A mop carrier is provided for mounting a mop and/or a brush to a mop handle. The mop carrier includes an elongated, continuous resilient blade having a first portion which extends downward at an acute angle, a second portion which curves around on itself and a third, straight portion which is horizontal and longer than the first portion. An upwardly open hollow cylindrical boss and connector are provided on the first portion near its outer end for mounting the mop carrier to the lower end of a mop handle. A hook is provided on the outside of the second portion for detachably retaining the loop of a mop that is sleeved on the third portion. And a set of flanges is provided on the third portion to permit a brush to be slidingly mounted on the third portion.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: July 12, 1983
    Assignees: Duskin Franchise Kabushiki Kaisha, Kabushiki Kaisha Sunpack
    Inventors: Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka, Tatsuo Nishimura
  • Mop
    Patent number: D262936
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: February 9, 1982
    Assignee: Duskin Franchise Kabushiki
    Inventors: Masanobu Nishiyama, Yosuke Yamamoto, Toshikazu Murakami, Hisaji Tanaka
  • Mop carrier
    Patent number: D274854
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: July 24, 1984
    Assignee: Duskin Franchise Kabushiki Kaisha
    Inventors: Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka, Tatsuo Nishimura
  • Mop
    Patent number: D274855
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: July 24, 1984
    Assignee: Duskin Franchise Kabushiki Kaisha
    Inventors: Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka, Tatsuo Nishimura
  • Mop carrier or similar article
    Patent number: D277039
    Type: Grant
    Filed: March 17, 1981
    Date of Patent: January 1, 1985
    Assignee: Duskin Franchise Kabushiki Kaisha
    Inventors: Ichiro Miyoshi, Masanobu Nishiyama, Hisaji Tanaka, Fusao Kanazawa