Patents by Inventor Kosho IWASAKI

Kosho IWASAKI 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: 11787973
    Abstract: A sliding member which has low sliding resistance, can prevent the leakage of a liquid, has low dust emission properties and low leachability, and can be manufactured in a simple manner; and a method for manufacturing the sliding member. The sliding member includes an elastic molded body which is coated with a coating layer composition containing an amino-modified silicone compound having a silanol group and/or an alkoxysilyl group and also having an amino-containing group in a side chain. The method for manufacturing the sliding member includes the steps of: preparing the coating layer composition containing the amino-modified silicone compound having the silanol group and/or the alkoxysilyl group and also having the amino-containing group in a side chain; applying the coating layer composition to the elastic molded body; and coating the elastic molded body with the coating layer composition.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: October 17, 2023
    Assignee: ASAHI FR R&D CO., LTD.
    Inventors: Kosho Iwasaki, Kazuaki Yamaguchi
  • Publication number: 20220380625
    Abstract: A sliding member which has low sliding resistance, can prevent the leakage of a liquid, has low dust emission properties and low leachability, and can be manufactured in a simple manner; and a method for manufacturing the sliding member. The sliding member includes an elastic molded body which is coated with a coating layer composition containing an amino-modified silicone compound having a silanol group and/or an alkoxysilyl group and also having an amino-containing group in a side chain. The method for manufacturing the sliding member includes the steps of: preparing the coating layer composition containing the amino-modified silicone compound having the silanol group and/or the alkoxysilyl group and also having the amino-containing group in a side chain; applying the coating layer composition to the elastic molded body; and coating the elastic molded body with the coating layer composition.
    Type: Application
    Filed: September 25, 2020
    Publication date: December 1, 2022
    Applicant: ASAHI FR R&D CO., LTD.
    Inventors: Kosho IWASAKI, Kazuaki YAMAGUCHI
  • Patent number: 11472945
    Abstract: A slidable rubber material that has an amino-modified interfacial layer that does not affect the compression set. Although the slidable rubber material includes a rubber component such as a butyl rubber or halogenated butyl rubber etc. having the low-compression set, which contains a vulcanization agent such as a nitrogen/sulfur compound or a vulcanizing auxiliary agent, the rubber part is coated with a silicone rubber layer. The slidable rubber material exhibits a slidability and resists the detachment or elution of fine particles from the coating layer. A rubber component and a vulcanization agent; an interfacial modification layer that coats the rubber part and an amino-modified silicone compound is incorporated with surface molecules of the rubber part; and a layer that coats the interfacial modification and contains solid fine particles, an addition-type or condensation-type silicone rubber in which the particles are dispersed, and a curing catalyst for silicone rubber.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: October 18, 2022
    Assignees: ASAHI RUBBER INC., ICHINEN CHEMICALS CO., LTD.
    Inventors: Kosho Iwasaki, Yuko Takami, Akira Yoshida, Tomoya Uchida, Daisuke Tanaka
  • Publication number: 20220267572
    Abstract: A slidable rubber material that has an amino-modified interfacial layer that does not affect the compression set. Although the slidable rubber material includes a rubber component such as a butyl rubber or halogenated butyl rubber etc. having the low-compression set, which contains a vulcanization agent such as a nitrogen/sulfur compound or a vulcanizing auxiliary agent, the rubber part is coated with a silicone rubber layer. The slidable rubber material exhibits a slidability and resists the detachment or elution of fine particles from the coating layer. A rubber component and a vulcanization agent; an interfacial modification layer that coats the rubber part and an amino-modified silicone compound is incorporated with surface molecules of the rubber part; and a layer that coats the interfacial modification and contains solid fine particles, an addition-type or condensation-type silicone rubber in which the particles are dispersed, and a curing catalyst for silicone rubber.
    Type: Application
    Filed: September 25, 2020
    Publication date: August 25, 2022
    Applicants: ASAHI RUBBER INC., ICHINEN CHEMICALS CO., LTD.
    Inventors: Kosho IWASAKI, Yuko TAKAMI, Akira YOSHIDA, Tomoya UCHIDA, Daisuke TANAKA