Patents by Inventor Koudai Sasaki

Koudai Sasaki 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 and method for producing same
    Patent number: 10954586
    Abstract: A copper alloy disclosed in the present description has a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied), in which a main phase is a ?CuSn phase with Al dissolved therein, and the ?CuSn phase undergoes martensitic transformation when heat-treated or worked. A method for producing a copper alloy disclosed in the present description is a casting step of melting and casting a raw material containing Cu, Sn, and Al and having a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied) so as to obtain a cast material, and a homogenization step of homogenizing the cast material in a temperature range of a ?CuSn phase so as to obtain a homogenized material, the method includes at least the casting step.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 23, 2021
    Assignees: NGK Insulators, Ltd., National University Corporation Yokohama National University
    Inventors: Mahoto Takeda, Koudai Sasaki, Naokuni Muramatsu, Takanari Nakajima
  • Copper alloy and method for producing same
    Patent number: 10774401
    Abstract: A copper alloy disclosed in the present description has a basic alloy composition represented by Cu100-(x+y)SnxMny (where 8?x?16 and 2?y?10 are satisfied), in which a main phase is a ?CuSn phase with Mn dissolved therein, and the ?CuSn phase undergoes martensitic transformation when heat-treated or worked.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: September 15, 2020
    Assignees: NGK Insulators, Ltd., National University Corporation Yokohama Natinal University
    Inventors: Mahoto Takeda, Koudai Sasaki, Daisuke Kaneko, Naokuni Muramatsu, Takanari Nakajima
  • COPPER ALLOY AND METHOD FOR PRODUCING SAME
    Publication number: 20190017148
    Abstract: A copper alloy disclosed in the present description has a basic alloy composition represented by Cu100-(x+y)SnxMny (where 8?x?16 and 2?y?10 are satisfied), in which a main phase is a ?CuSn phase with Mn dissolved therein, and the ?CuSn phase undergoes martensitic transformation when heat-treated or worked.
    Type: Application
    Filed: September 20, 2018
    Publication date: January 17, 2019
    Applicants: NGK INSULATORS, LTD., National University Corporation YOKOHAMA National University
    Inventors: Mahoto TAKEDA, Koudai SASAKI, Daisuke KANEKO, Naokuni MURAMATSU, Takanari NAKAJIMA
  • COPPER ALLOY AND METHOD FOR PRODUCING SAME
    Publication number: 20180209025
    Abstract: A copper alloy disclosed in the present description has a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied), in which a main phase is a ?CuSn phase with Al dissolved therein, and the ?CuSn phase undergoes martensitic transformation when heat-treated or worked. A method for producing a copper alloy disclosed in the present description is a casting step of melting and casting a raw material containing Cu, Sn, and Al and having a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied) so as to obtain a cast material, and a homogenization step of homogenizing the cast material in a temperature range of a ?CuSn phase so as to obtain a homogenized material, the method includes at least the casting step.
    Type: Application
    Filed: February 22, 2018
    Publication date: July 26, 2018
    Applicants: NGK INSULATORS, LTD., National University Corporation YOKOHAMA National University
    Inventors: Mahoto TAKEDA, Koudai Sasaki, Naokuni Muramatsu, Takanari Nakajima