Patents by Inventor Ryuji Yamakawa

Ryuji Yamakawa 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).

  • Patent number: 6691714
    Abstract: This invention relates to a wearer's own hair utilizing type wig in which the wearer's own hair is pulled up through a space in the wig and blended with false hairs at the time for attaching the wig to the wearer and in which the wearer's own hair can be effectively and evenly utilized, thus enabling to provide an abundance of hair as a whole. Particularly, the wig (1, 2, 3) comprises a hair-secured frame (10, 20, 30) which includes a skeleton-like framework and false hairs (15) attached to the skeleton-like framework.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: February 17, 2004
    Assignee: Aderans Co., Ltd.
    Inventors: Toshio Yaguchi, Yoshihiko Isobedate, Katsuo Sugai, Sakiko Imai, Ryuji Yamakawa, Shinkichi Kojima
  • Patent number: 5299681
    Abstract: Retainer grooves are formed widthwise at a constant pitch on the external surface of a timing belt to retain the lead terminals of an electronic component therein. A magnet is mounted to a rail for guiding the timing belt to attract the lead terminals of the electronic component to the retainer grooves. The electronic component can be prevented from falling off or being displaced due to an inertia force generated at the time of intermittent feed so as to be stably conveyed not only horizontally but also in vertical or circular arc directions.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: April 5, 1994
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Nobuaki Kadono, Daisaku Kugo, Masatoshi Kajiwara, Ryuji Yamakawa
  • Patent number: 5259911
    Abstract: An apparatus for automatically taping electronic components arranged such that when a timing belt retaining lead terminals of electronic components in its retainer grooves is engaged with a toothed pulley of a first rotary drum, the lead terminals are lifted to be transferred from the timing belt to the first rotary drum. The electronic components are transferred from the first drum to a third rotary drum via a second rotary drum being retained by their retainer teeth. A base tape is fed to the periphery of the third rotary drum and an adhesive tape is applied on the base tape, thereby fixing the lead terminals.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: November 9, 1993
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Nobuo Ohnishi, Daisaku Kugo, Nobuaki Kadono, Masatoshi Kajiwara, Ryuji Yamakawa