Patents by Inventor Ryuji Sakamoto

Ryuji Sakamoto 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).

  • Thermal storage unit
    Patent number: 4993481
    Abstract: A thermal storage unit has a thermal storage material which performs heat exchange through a fluid filled in a thermal storage body arranged within a vessel having an opening communicated to outside. The thermal storage body is a porous ceramic molding which contains the thermal storage medium.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: February 19, 1991
    Assignees: The Agency of Industrial Science and Technology, Ibiden Co., Ltd.
    Inventors: Masayuki Kamimoto, Yoshiyuki Abe, Yoshio Takahashi, Ryuji Sakamoto, Kotaro Tanaka, Akira Negishi, Hidetoshi Yamauchi, Kiyotaka Tsukada, Yoshimi Ohashi
  • Key-touch sensor and method of manufacture
    Patent number: 4794366
    Abstract: A key-touch sensor has an electric circuit formed on a first electrically insulating substrate covered with a carbon electrode, an electric circuit formed on a second electrically insulating substrate covered with a carbon electrode which is opposed to the electric circuit on the first substrate across a gap, and a pressure-sensitive electroconductive layer deposited to at least one of the first or second substrates and disposed to fill the gap.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: December 27, 1988
    Assignee: Toshiba Silicone Co., Ltd.
    Inventor: Ryuji Sakamoto
  • Electroconductive silicone elastomer compositions
    Patent number: 4552688
    Abstract: The present invention provides an electroconductive silicone elastomer composition comprising:(A) 100 parts by weight of a polydiorganosiloxane having an average degree of polymerization of 500 to 12,000, wherein each polymer molecule contains at least two vinyl groups bonded to silicon atoms;(B) 100 to 500 parts by weight of nickel-coated carbon;(C) 0.1 to 5 parts by weight of a polyorganohydrogensiloxane, and(D) 0.2 to 300 ppm based on the total amount of (A), (B) and (C) of platinum metal or platinum compound as platinum atom.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: November 12, 1985
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Ryuji Sakamoto, Taro Yamazaki
  • Heat storage medium for latent heat thermal energy storage unit
    Patent number: 4463799
    Abstract: A heat storage medium for use in a latent heat TES unit is obtained by treating a crystalline polyolefin with ion plasma thereby crosslinking it only in the surface region.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: August 7, 1984
    Assignee: Agency of Industrial Science Technology, Ministry of International Trade & Industry
    Inventors: Yoshio Takahashi, Takeo Ozawa, Ryuji Sakamoto, Katsuhiko Kanari, Masayuki Kamimoto