Patents by Inventor Narutomo Shiraki

Narutomo Shiraki 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).

  • Patent number: 11291867
    Abstract: An interdental cleaning tool (1) that includes a base (10) that has a shaft (20) shaped to be capable of being inserted between teeth, the base (10) being formed from a composite material that contains a synthetic resin, a reinforcement containing glass, and a copolymer having, as structural units, a polyolefin and an anhydride of an unsaturated carboxylic acid.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 5, 2022
    Assignee: KOBAYASHI PHARMACEUTICAL CO., LTD.
    Inventors: Tasuku Kikkawa, Narutomo Shiraki, Noboru Kusakabe
  • Publication number: 20190192265
    Abstract: An interdental cleaning tool (1) that includes a base (10) that has a shaft (20) shaped to be capable of being inserted between teeth, the base (10) being formed from a composite material that contains a synthetic resin, a reinforcement containing glass, and a copolymer having, as structural units, a polyolefin and an anhydride of an unsaturated carboxylic acid.
    Type: Application
    Filed: September 26, 2017
    Publication date: June 27, 2019
    Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.
    Inventors: Tasuku KIKKAWA, Narutomo SHIRAKI, Noboru KUSAKABE
  • Publication number: 20190000598
    Abstract: An interdental cleaning tool (1) comprises a base (10) having a shaft (20) that has a shape to be inserted into an interdental space, wherein the base (10) is formed of a composite material comprising a synthetic resin, a reinforcement material and a low-hardness resin having a lower hardness than the hardness of the synthetic resin.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 3, 2019
    Applicant: Kobayashi Pharmaceutical Co., Ltd.
    Inventors: Tasuku Kikkawa, Narutomo Shiraki, Satoru Komiyama, Noboru Kusakabe, Shinji Yumei, Masanori Kawakami