Patents by Inventor Muneyoshi Yokota

Muneyoshi Yokota 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).

  • Copper alloy fastener element and slide fastener
    Patent number: 11246382
    Abstract: Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a ? phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a ? phase at a ratio of 10% or less.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: February 15, 2022
    Assignee: YKK Corporation
    Inventors: Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Muneyoshi Yokota, Takahiro Fukuyama, Kouta Kido
  • COPPER ALLOY FASTENER ELEMENT AND SLIDE FASTENER
    Publication number: 20210045502
    Abstract: Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a ? phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a ? phase at a ratio of 10% or less.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Inventors: Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Muneyoshi Yokota, Takahiro Fukuyama, Kouta Kido
  • Copper alloy fastener element and slide fastener
    Patent number: 10918171
    Abstract: Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a ? phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a ? phase at a ratio of 10% or less.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 16, 2021
    Inventors: Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Muneyoshi Yokota, Takahiro Fukuyama, Kouta Kido
  • Copper Alloy Fastener Element and Slide Fastener
    Publication number: 20190269207
    Abstract: Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a ? phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a ? phase at a ratio of 10% or less.
    Type: Application
    Filed: July 26, 2016
    Publication date: September 5, 2019
    Inventors: Takanori Kumei, Atsushi Ogihara, Chikako Hiromi, Yoshio Taira, Muneyoshi Yokota, Takahiro Fukuyama, Kouta Kido