Patents by Inventor Ryota Kusanagi

Ryota Kusanagi 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).

  • BLADE USING ULTRA-HARD MICROSCOPIC PARTICLES
    Publication number: 20090241352
    Abstract: The present invention relates to a blade that comprises a blade main body and an edge part. In the blade main body and the edge part, one or more comprising the edge part are manufactured by using a powder composition that comprises less than 5% by weight of the ultra-hard particle powder having a particle size in the range of 1 ?m to 5 ?m based on a total weight of the powder composition and the balance metal powder forming a matrix according to a powder metallurgy process. The blade according to the present invention has a sawlike or wavy edge part to provide an excellent cutting ability. Even though the abrasion occurs by using the blade, since the sawlike or wavy edge part is semipermanently maintained, the cutting ability is not reduced.
    Type: Application
    Filed: September 26, 2008
    Publication date: October 1, 2009
    Inventors: KIMIKO SUEDA, Ryota Kusanagi
  • Knife blade
    Patent number: D643262
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: August 16, 2011
    Assignee: Forever Co., Ltd.
    Inventor: Ryota Kusanagi
  • Knife blade
    Patent number: D677998
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: March 19, 2013
    Assignee: Forever Co., Ltd.
    Inventor: Ryota Kusanagi
  • Kitchen knife blade
    Patent number: D705614
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 27, 2014
    Assignee: Forever Co., Ltd.
    Inventor: Ryota Kusanagi
  • Kitchen knife blade
    Patent number: D714103
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: September 30, 2014
    Assignee: Forever Co. Ltd.
    Inventor: Ryota Kusanagi