Patents by Inventor Eiji YAMAHARA

Eiji YAMAHARA 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).

  • Corrugated paperboard box, perforation forming method for perforating corrugated paperboard sheet, and perforation forming device and perforation forming unit for perforating corrugated paperboard sheet
    Patent number: 10427828
    Abstract: A corrugated paperboard box is provided in which when flaps are bent, a perforated line along which the flaps can be separated from the box is less likely to break. Such a corrugated paperboard box includes a peripheral wall and top flaps, and is formed, at the boundary area between the peripheral wall and the top flaps, with a groove-shaped reverse scoreline recessed on the side of an outer linerboard, and a pair of groove-shaped recesses recessed on the side of an inner linerboard, and extending in parallel to each other so as to sandwich the area in which the reverse scoreline extends. The corrugated paperboard box is further formed, in one of the groove-shaped recesses, with a perforated line along which the top flaps can be separated from the peripheral wall. The top flaps can be bent along the perforated line toward the inner surface of the peripheral wall.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 1, 2019
    Assignee: RENGO CO., LTD.
    Inventors: Taishi Yamada, Takashi Kajizuka, Hidetoshi Tonooka, Eiji Yamahara, Hiromu Ikeda, Taku Furuta, Atsuo Ishikawa, Katsuhiko Yasumoto, Satoshi Mochizuki, Yoichi Nishikawa, Masayoshi Ootani
  • CORRUGATED PAPERBOARD BOX, PERFORATION FORMING METHOD FOR PERFORATING CORRUGATED PAPERBOARD SHEET, AND PERFORATION FORMING DEVICE AND PERFORATION FORMING UNIT FOR PERFORATING CORRUGATED PAPERBOARD SHEET
    Publication number: 20170349323
    Abstract: A corrugated paperboard box is provided in which when flaps are bent, a perforated line along which the flaps can be separated from the box is less likely to break. Such a corrugated paperboard box includes a peripheral wall and top flaps, and is formed, at the boundary area between the peripheral wall and the top flaps, with a groove-shaped reverse scoreline recessed on the side of an outer linerboard, and a pair of groove-shaped recesses recessed on the side of an inner linerboard, and extending in parallel to each other so as to sandwich the area in which the reverse scoreline extends. The corrugated paperboard box is further formed, in one of the groove-shaped recesses, with a perforated line along which the top flaps can be separated from the peripheral wall. The top flaps can be bent along the perforated line toward the inner surface of the peripheral wall.
    Type: Application
    Filed: May 17, 2016
    Publication date: December 7, 2017
    Inventors: Taishi YAMADA, Takashi KAJIZUKA, Hidetoshi TONOOKA, Eiji YAMAHARA, Hiromu IKEDA, Taku FURUTA, Atsuo ISHIKAWA, Katsuhiko YASUMOTO, Satoshi MOCHIZUKI, Yoichi NISHIKAWA, Masayoshi OOTANI