Patents by Inventor Tetsuo Koyama

Tetsuo Koyama 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: 8915775
    Abstract: An exhaust system includes: an exhaust pressure controller interposed in an exhaust passage and including: a pipe body including a side peripheral wall in which at least one port is formed; and a gas introduction wall for introducing an exhaust gas flowing from an upstream side of the pipe body so that the exhaust gas flows downstream without coming into direct contact with the port and vicinity thereof, one face of the gas introduction wall forming a pressure control path together with an inner face of the side peripheral wall while another face of the gas introduction wall forming an exhaust gas path along which the exhaust gas flows. The port communicates with the pressure control path, and the pressure control path communicates with the exhaust gas path at part downstream of the port.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: December 23, 2014
    Assignees: Mitsubishi Cable Industries, Ltd., Spansion LLC
    Inventors: Takeshi Ikeda, Kazuo Koizumi, Hiroyuki Takeda, Tetsuo Koyama, Keiichi Watanabe
  • Publication number: 20080072585
    Abstract: An exhaust system includes: an exhaust pressure controller interposed in an exhaust passage and including: a pipe body including a side peripheral wall in which at least one port is formed; and a gas introduction wall for introducing an exhaust gas flowing from an upstream side of the pipe body so that the exhaust gas flows downstream without coming into direct contact with the port and vicinity thereof, one face of the gas introduction wall forming a pressure control path together with an inner face of the side peripheral wall while another face of the gas introduction wall forming an exhaust gas path along which the exhaust gas flows. The port communicates with the pressure control path, and the pressure control path communicates with the exhaust gas path at part downstream of the port.
    Type: Application
    Filed: April 24, 2007
    Publication date: March 27, 2008
    Applicants: MITSUBISHI CABLE INDUSTRIES, LTD., OSAKA RASENKAN KOGYO CO., LTD., SPANSION LLC, SPANSION JAPAN LTD.
    Inventors: Takeshi Ikeda, Kazuo Koizumi, Hiroyuki Takeda, Tetsuo Koyama, Keiichi Watanabe
  • Patent number: 3988987
    Abstract: Combination stamp comrpises a plurality of independent stamp elements joined together for use in combination. The stamp element includes a stamp frame having a stamp plate at its lower end and a top wall and four side walls. A dovetail-like vertical projection is formed on one of the opposing side walls and a dovetail-like vertical groove in the other side wall. Engagement of the projection in the groove joins adjacent stamp elements together against horizontal displacement. Each of the other opposing side walls has a horizontal groove in its upper portion. The joined stamp elements are so adjusted that the horizontal grooves therein are in alignment with each other, and a cover having inward projections along the opposite side edges thereof is fitted over the stamp elements, with the inward projections engaged in the aligned horizontal grooves, whereby the stamp elements are prevented from vertical displacement.
    Type: Grant
    Filed: October 23, 1974
    Date of Patent: November 2, 1976
    Assignee: Yamauchi Rubber Industry Co., Ltd.
    Inventors: Kenichiro Ikura, Nobukazu Sakamoto, Tetsuo Koyama, Masaru Miyazaki