Patents by Inventor Kisaburo Yamaguchi

Kisaburo Yamaguchi 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).

  • Easily openable cover member
    Patent number: 4324341
    Abstract: An easily openable cover member for a container which is formed from thermoplastic synthetic resin of high flexibility and which integrally has unsealing means for opening an openable portion defined by a thinned portion and said unsealing means is integral with and extends upwardly of the openable portion. The cover member has been formed by injection-molding synthetic resin so as to have the openable portion integrally formed with the unsealing means.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: April 13, 1982
    Assignee: Tokan Kogyo Kabushiki Kaisha
    Inventors: Kisaburo Yamaguchi, Tsukasa Yoshikawa
  • Easily openable cover member
    Patent number: 4324342
    Abstract: An easily openable cover member for a container which is formed from thermoplastic synthetic resin of high flexibility and which integrally has unsealing means for opening an openable portion defined by a thinned portion and said unsealing means is integral with and extends upwardly of the openable portion. The cover member has been formed by injection-molding synthetic resin so as to have the openable portion integrally formed with the unsealing means.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: April 13, 1982
    Assignee: Tokan Kogyo Kabushiki Kaisha
    Inventors: Kisaburo Yamaguchi, Tsukasa Yoshikawa
  • Easily openable cover member
    Patent number: 4256239
    Abstract: An easily openable cover member for a container which is formed from thermoplastic synthetic resin of high flexibility and which integrally has unsealing means for opening an openable portion defined by a thinned portion and said unsealing means is integral with and extends upwardly of the openable portion. The cover member has been formed by injection-molding synthetic resin so as to have the openable portion integrally formed with the unsealing means.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: March 17, 1981
    Assignee: Tokan Kogyo Kabushiki Kaisha
    Inventors: Kisaburo Yamaguchi, Tsukasa Yoshikawa