Patents by Inventor Ko Agatsuma

Ko Agatsuma 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).

  • Temperature measurement device
    Patent number: 4986670
    Abstract: A temperature measurement device is provided with a temperature sensing element which contains a quartz resonator having a quartz oscillating crystal whose ratio of width to thickness is in the range of 9.48 to 9.69, and an antenna which receives stimulus for the quartz oscillating crystal and transmits waves of reverberatory oscillation. The temperature measurement device is capable of measuring temperatures in the range of normal room temperature to extremely low temperatures (4.degree. K.).
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: January 22, 1991
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade, Tokyo Denpa Co., Ltd.
    Inventors: Futoshi Uchiyama, Ko Agatsuma, Takeshi Ohara, Koichi Tsukamoto, Sumiyuki Ishigami, Mitsuru Sato, Hisashi Sugimoto
  • Forced-cooled superconductor
    Patent number: 4568900
    Abstract: A forced-cooled superconductor wherein a plurality of superconducting wires are placed within a hollow stabilizer of substantially rectangular section; and a first passage for passing a coolant is longitudinally formed between the stabilizer and a casing encasing the stabilizer, the stabilizer having a plurality of second passages formed therethrough for flowing the coolant from the first passage to the inside of the stabilizer so that the coolant flows through the second passages into the space defined between the superconducting wires for direct cooling. The stabilizer includes a pair of channel members opposedly fitted together to form into a substantially rectangular tube.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: February 4, 1986
    Assignees: Agency of Industrial Science and Technology, Fujikura, Ltd.
    Inventors: Ko Agatsuma, Katsuyuki Kaiho, Kenichi Koyama, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Shigeo Shihyakugari, Tetsuo Yamaguchi
  • Method for producing hollow superconducting cables
    Patent number: 4161062
    Abstract: A method for producing hollow superconducting cable comprises steps of providing grooves on the outer periphery of a hollow conductor adapted to be engageable therewithin fine multi-filamentary superconductors formed beforehand to be fitted into said grooves, and of fixing securely said multi-filamentary superconductors into said grooves by soldering with a metal having a low melting point.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: July 17, 1979
    Assignees: Agency of Industrial Science and Technology, The Fujikura Cable Works, Ltd.
    Inventors: Ko Agatsuma, Kenichi Koyama, Itaru Todoriki, Tetsuo Yamaguchi, Osamu Kohno, Takashi Saito