Patents by Inventor Masayoshi Ezawa

Masayoshi Ezawa 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: 4922104
    Abstract: An infrared spectrum measuring microscope apparatus which is suitable for accurately identifying the material at a microfine portion. A sample stage is vertically moved and special optical means are provided in the sample stage for enabling high-sensitivity spectral measurement of a microfine portion of samples of various sizes. The infrared microspectometer of the present invention also enables the chemical species of the sample to be identified by the fluorescence spectrum in addition to the information of the infrared spectrum.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: May 1, 1990
    Assignee: 501 Hitachi, Ltd.
    Inventors: Kinya Eguchi, Kikue Niitsuma, Shigeru Wakena, Masayoshi Ezawa
  • Patent number: 4890481
    Abstract: A system for measuring a foreign material in a liquid, includes a sampling section, vacuum deaerators, foreign material measuring sensors. The sampling section prepares a sample liquid containing various foreign materials having particles of different sizes and numbers and a calibration standard liquid containing particles of known sizes and numbers. The vacuum deaerators deaerate gases mixed in the sample and calibration standard liquids. The sensors detect the foreign materials in the deaerated liquids. These sensors are arranged in front of the deaerators, respectively.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: January 2, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Ezawa, Shigeru Wakana, Akira Misumi, Yoshifumi Tomita, Yutaka Hiratsuka
  • Patent number: 4779451
    Abstract: A system for measuring a foreign material in a liquid, includes a sampling section, vacuum deaerators, foreign material measuring sensors. The sampling section prepares a sample liquid containing various foreign materials having particles of different sizes and numbers and a calibration standard liquid containing particles of known sizes and numbers. The vacuum deaerators deaerate gases mixed in the sample and calibration standard liquids. The sensors detect the foreign materials in the deaerated liquids. These sensors are arranged in front of the deaerators, respectively.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: October 25, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Ezawa, Shigeru Wakana, Akira Misumi, Yoshifumi Tomita, Yutaka Hiratsuka
  • Patent number: 4723091
    Abstract: The panel face plate of a cathode ray tube is provided with an irregular film which is formed by spraying a mixed solution of silicon hydroxide, alcohol and alkyl acetate onto the panel face plate.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: February 2, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Hiromitsu Kawamura, Akira Misumi, Masayoshi Ezawa, Katsumi Kobara, Yoshiyuki Odaka
  • Patent number: 4717853
    Abstract: Disclosed is a projection tube containing a coolant comprising a liquid mixture of ethylene glycol and water filled in the space between a phosphor screen panel and a transparent face panel which is set up at a certain distance in front thereof, wherein the coolant is incorporated with 10 ppm to 20 wt. % of an ethylene oligomer. The present projection tube is an excellent product free from a decrease in transmittance due to the coloring of the coolant in operation at a high temperature.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: January 5, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Ezawa, Hiroko Wakui, Shigeru Wakana, Toshikazu Morishita, Akira Misumi
  • Patent number: 4481265
    Abstract: A photovoltaic-storage battery device is disclosed, which comprises a substrate having a pair of major surfaces, a photovoltaic element formed on one major surface of the substrate and including a pair of opposing electrodes and a photoelectric film intervening between the pair of opposing electrodes and a storage battery element formed on the other major surface of the substrate and including a second pair of opposing electrodes which are connectable to the first-mentioned pair of opposing electrodes, respectively, and an electrolyte intervening between the second-mentioned pair of opposing electrodes.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: November 6, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Ezawa, Akira Misumi, Kenkichi Suzuki, Masaharu Kumada