Patents by Inventor Hiroko NAMEKAWA

Hiroko NAMEKAWA 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).

  • Package and film
    Patent number: 11731825
    Abstract: A package includes: a film including a crystalline stretched oriented film; and a breaking portion provided in the film and including one or more non-oriented portions formed by heating a part of the crystalline stretched oriented film at a temperature equal to or higher than a melting point of the crystalline stretched oriented film and facing each other with an oriented portion of the crystalline stretched oriented film interposed therebetween.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: August 22, 2023
    Assignee: Daiwa Can Company
    Inventors: Yuji Takeuchi, Hiroko Namekawa, Takashi Kimiduka, Takashi Kanehira
  • PACKAGE AND FILM
    Publication number: 20200239219
    Abstract: A package includes: a film including a crystalline stretched oriented film; and a breaking portion provided in the film and including one or more non-oriented portions formed by heating a part of the crystalline stretched oriented film at a temperature equal to or higher than a melting point of the crystalline stretched oriented film and facing each other with an oriented portion of the crystalline stretched oriented film interposed therebetween.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 30, 2020
    Inventors: Yuji TAKEUCHI, Hiroko NAMEKAWA, Takashi KIMIDUKA, Takashi KANEHIRA
  • Method of manufacturing two-piece food can
    Patent number: 10052675
    Abstract: A method of manufacturing a two-piece food can having improved corrosion resistance is provided, wherein the two-piece food can using a metal sheet coated with a thermoplastic resin and having annular uneven beads and/or a bottom rim. After forming a bottomed cylindrical can body by drawing and ironing, by heating at a temperature higher than the melting temperature of the thermoplastic resin for a predetermined time before forming uneven beads and/or a bottom rim to the can body and quenching within a predetermined time after heating, the inner resin coating hardly peel off during the following formation of uneven beads and/or the bottom rim. As a result, a two-piece food can having excellent corrosion resistance may be obtained.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: August 21, 2018
    Assignee: DAIWA CAN COMPANY
    Inventors: Hiroko Namekawa, Koichiro Nakamura, Shigeru Noto, Yuichiro Murayama, Chiharu Nabeta, Tomohiko Oyanagi
  • METHOD OF MANUFACTURING TWO-PIECE FOOD CAN
    Publication number: 20160221064
    Abstract: A method of manufacturing a two-piece food can having improved corrosion resistance is provided, wherein the two-piece food can using a metal sheet coated with a thermoplastic resin and having annular uneven beads and/or a bottom rim. After forming a bottomed cylindrical can body by drawing and ironing, by heating at a temperature higher than the melting temperature of the thermoplastic resin for a predetermined time before forming uneven beads and/or a bottom rim to the can body and quenching within a predetermined time after heating, the inner resin coating hardly peel off during the following formation of uneven beads and/or the bottom rim. As a result, a two-piece food can having excellent corrosion resistance may be obtained.
    Type: Application
    Filed: September 11, 2013
    Publication date: August 4, 2016
    Inventors: Hiroko NAMEKAWA, Koichiro NAKAMURA, Shigeru NOTO, Yuichiro MURAYAMA, Chiharu NABETA, Tomohiko OYANAGI