Patents by Inventor Tatsuo Akatsu

Tatsuo Akatsu 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).

  • Liquid ejecting head
    Patent number: 7490923
    Abstract: A conductive nozzle plate is formed with a nozzle orifice. An insulative layer is formed on a first face of the nozzle plate. A head body includes a pressure chamber adapted to contain liquid therein and a pressure generating element operable to cause pressure fluctuation in the liquid. The head body is attached to a second face of the nozzle plate so as to communicate the pressure chamber with the nozzle orifice. The second face of the nozzle plate and the head body are fixed to a head case. A conductive head cover covers a part of the first face of the nozzle plate while exposing the nozzle orifice. A part of the nozzle plate and the head cover directly come into contact with each other.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: February 17, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Hirokazu Shibuya, Yasunori Koike, Noriaki Okazawa, Katsuhiro Okubo, Gaku Ko, Tatsuo Akatsu, Takateru Yamashita
  • LIQUID EJECTING HEAD
    Publication number: 20080235947
    Abstract: A conductive nozzle plate is formed with a nozzle orifice. An insulative layer is formed on a first face of the nozzle plate. A head body includes a pressure chamber adapted to contain liquid therein and a pressure generating element operable to cause pressure fluctuation in the liquid. The head body is attached to a second face of the nozzle plate so as to communicate the pressure chamber with the nozzle orifice. The second face of the nozzle plate and the head body are fixed to a head case. A conductive head cover covers a part of the first face of the nozzle plate while exposing the nozzle orifice. A part of the nozzle plate and the head cover directly come into contact with each other.
    Type: Application
    Filed: May 8, 2008
    Publication date: October 2, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirokazu SHIBUYA, Yasunori KOIKE, Noriaki OKAZAWA, Katsuhiro OKUBO, Gaku KO, Tatsuo AKATSU, Takateru YAMASHITA
  • Liquid ejecting head
    Publication number: 20060164467
    Abstract: A conductive nozzle plate is formed with a nozzle orifice. An insulative layer is formed on a first face of the nozzle plate. A head body includes a pressure chamber adapted to contain liquid therein and a pressure generating element operable to cause pressure fluctuation in the liquid. The head body is attached to a second face of the nozzle plate so as to communicate the pressure chamber with the nozzle orifice. The second face of the nozzle plate and the head body are fixed to a head case. A conductive head cover covers a part of the first face of the nozzle plate while exposing the nozzle orifice. A part of the nozzle plate and the head cover directly come into contact with each other.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 27, 2006
    Inventors: Hirokazu Shibuya, Yasunori Koike, Noriaki Okazawa, Katsuhiro Okubo, Gaku Ko, Tatsuo Akatsu, Takateru Yamashita
  • Polyphenylene sulfide resin compositions and their moldings
    Patent number: 4690969
    Abstract: The polyphenylene sulfide resin compositions being composed of polyphenylene sulfide having a unit represented by general formula: ##STR1## and halogenized copper are excellent in weather ability and the supersonic and other welds of their moldings are exceptionally superior in strength.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: September 1, 1987
    Assignee: Toray Industries, Inc.
    Inventors: Yoshio Takezawa, Tatsuo Akatsu