Patents by Inventor Takashi Edo

Takashi Edo 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: 8465191
    Abstract: A planar light emitting device provided with a light source; a sheet-like light guide that guides light from the light source in a planar direction, and has a plurality of light emitting regions, and a through slit formed between the light emitting regions to penetrate the light guide in a thickness direction; a switch sheet arranged so as to face one of the front face and the rear face of the light guide; and a light-blocking layer that has a flange portion that covers an opening edge portion of the through slit, a main body portion that covers at least one of the mutually facing inner wall surfaces of the through slit so as to form a space in the interior of the through slit and that continuous with the flange portion, and a bottom portion that is extended from a lower portion of the main body portion.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 18, 2013
    Assignee: Fujikura Ltd.
    Inventors: Tomosada Inada, Shimpei Sato, Takashi Edo
  • Publication number: 20120163020
    Abstract: A planar light emitting device provided with a light source; a sheet-like light guide that guides light from the light source in a planar direction, and has a plurality of light emitting regions, and a through slit formed between the light emitting regions to penetrate the light guide in a thickness direction; a switch sheet arranged so as to face one of the front face and the rear face of the light guide; and a light-blocking layer that has a flange portion that covers an opening edge portion of the through slit, a main body portion that covers at least one of the mutually facing inner wall surfaces of the through slit so as to form a space in the interior of the through slit and that continuous with the flange portion, and a bottom portion that is extended from a lower portion of the main body portion.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Applicant: Fujikura Ltd.
    Inventors: Tomosada Inada, Shimpei Sato, Takashi Edo
  • Publication number: 20120061226
    Abstract: A switch device includes: a circuit board provided with a fixed contact; a deformable contact arranged above the circuit board, and configured to deform and come into contact with the fixed contact in response to pressure from above; a switch holding sheet covering a surface of the circuit board provided with the deformable contact, and configured to retain the deformable contact on the circuit board; a light-guide sheet placed over the switch holding sheet, and allowing light to pass through its inside; a light-emitting diode configured to cause the light to fall incident and enter the inside of the light-guide sheet; and a protrusion forming a gap between the switch holding sheet and the light-guide sheet in a position corresponding to the deformable contact.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: FUJIKURA LTD.
    Inventors: Takashi EDO, Akimi YAMASAKI, Tomosada INADA
  • Patent number: 6755995
    Abstract: A flame-retardant resin composition, which has a high flame retardancy equivalent to that of PVCs and can be separated from PVCs by a difference in specific gravity, is obtained by adding not less than 5 parts by weight and less than 50 parts by weight of a hydrated inorganic compound and not less than 1 part by weight and not more than 55 parts by weight of an auxiliary flame retardant having an action of forming a char-like thermally insulating layer on combustion and/or an action of foaming at high temperature thereby to entrap water vapor in a polyolefine resin so that the resulting flame-retardant resin composition has a specific gravity of 1.14 or less and an oxygen index of 24 or more.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 29, 2004
    Assignee: Fujikura Ltd.
    Inventors: Masatake Hasegawa, Hirotaka Sawada, Masakazu Ohashi, Takashi Shinmoto, Kouiti Iinuma, Takashi Edo, Jun Suzuki, Hiroshi Matsui