Patents by Inventor Takehiko Kawasaki

Takehiko Kawasaki 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).

  • Method of manufacturing cantilever drive mechanism, method of manufacturing probe drive mechanism, cantilever drive mechanism, probe drive mechanism and electronic device which uses the same
    Patent number: 5398229
    Abstract: A method of manufacturing a cantilever drive mechanism arranged in such a manner that a cantilever portion, in which a piezoelectric layer is disposed between electrode layers, and a circuit portion, which is positioned adjacent to the cantilever portion and which drives the cantilever are formed on the same substrate. The method includes the steps of first forming the circuit portion and then forming the cantilever portion after the circuit portion has been formed.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: March 14, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaru Nakayama, Osamu Takamatsu, Takayuki Yagi, Keisuke Yamamoto, Takehiko Kawasaki, Yasuhiro Shimada, Yoshio Suzuki
  • Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same
    Patent number: 5339457
    Abstract: The present invention relates to a superconductive electromagnetic wave mixer comprising a local-oscillator section and a receiving section, said receiving section serving as a section at which an electromagnetic wave from the local-oscillator section and an externally originating electromagnetic wave are combined. The local-oscillator section and said receiving section are each formed by at least one Josephson junction employing at least one oxide superconductor.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: August 16, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiko Kawasaki, Katsuhiko Shinjo, Keisuke Yamamoto, Norio Kaneko
  • Probe drive mechanism and electronic device which uses the same
    Patent number: 5334835
    Abstract: A probe drive mechanism includes a cantilever portion in which a piezoelectric layer is disposed between electrode layers, and a circuit portion which is positioned adjacent to the cantilever portion and drives the cantilever. The cantilever portion and the circuit portion are formed on the same substrate. A protection layer covers the circuit portion and part of the substrate, and the cantilever portion is formed on the protection layer adjacent to the circuit portion.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: August 2, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaru Nakayama, Osamu Takamatsu, Takayuki Yagi, Keisuke Yamamoto, Takehiko Kawasaki, Yasuhiro Shimada, Yoshio Suzuki
  • Recording medium, recording method, and readout method
    Patent number: 5289402
    Abstract: A recording medium comprises an electroconductive oxide film held between a substrate and an insulating oxide film. A recording method locally applies a voltage onto the medium to form a portion different in electric resistance or oxygen content in the electroconductive oxide film. A record-readout method comprises the steps of applying a voltage to the electroconductive oxide film having information recorded thereon, and detecting the intensity of current flowing through a recorded portion to read out the recorded information.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: February 22, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Yamamoto, Fumio Kishi, Taiko Motoi, Takehiko Kawasaki, Norio Kaneko
  • Purification apparatus for superconductor fine particles
    Patent number: 5182253
    Abstract: A purification apparatus for superconductor fine particles is provided which comprises a device for forming a flow of powder containing the superconductor fine particles, and device for applying a magnetic field to the flow of the powder.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: January 26, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumio Kishi, Masatake Akaike, Keisuke Yamamoto, Taiko Motoi, Norio Kaneko, Fujio Iwatate, Kazuaki Ohmi, Takehiko Kawasaki, Atsuko Shinjou
  • Light detecting device and light detecting method using a superconnector
    Patent number: 5155093
    Abstract: A light detecting device includes a signal input portion which generates a current upon input of a light signal, a signal detecting portion including a superconductor which detects the light signal with injection of the generated current, and electrodes through which the generated current is injected into the superconductor.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: October 13, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tohru Den, Katsuhiko Shinjo, Taiko Motoi, Takehiko Kawasaki, Norio Kaneko