Patents by Inventor Yasuhiko Takamatsu

Yasuhiko Takamatsu 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: 9196854
    Abstract: An organic EL light emitting device and an organic EL light source device having the organic EL light emitting device are described. A method of manufacturing the organic EL light emitting device includes forming a scaling layer over a sealing layer base material by using at least one of chemical vapor deposition and physical vapor deposition, joining the sealing layer to an organic EL substrate having an organic EL device so as to cover the organic EL device, and removing the sealing layer base material to leave the sealing layer that covers the organic EL device.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: November 24, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventor: Yasuhiko Takamatsu
  • Publication number: 20140252328
    Abstract: An organic EL light emitting device and an organic EL light source device having the organic EL light emitting device are described. A method of manufacturing the organic EL light emitting device includes forming a scaling layer over a sealing layer base material by using at least one of chemical vapor deposition and physical vapor deposition, joining the sealing layer to an organic EL substrate having an organic EL device so as to cover the organic EL device, and removing the sealing layer base material to leave the sealing layer that covers the organic EL device.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventor: Yasuhiko Takamatsu
  • Patent number: 4651164
    Abstract: A thermal printhead for use in a thermal recording machine includes a substrate on which a plurality of heat-producing elements are formed in the form of a linear array and a plurality of I.C. driver chips provided along one side of the linear array, and the I.C. driver chip includes output pads formed in a line spaced apart from one another on its surface along one side thereof. Using such an I.C. driver chip, the linear array density of 8 elements/mm and thus recording density of 8 dots/mm is obtained.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: March 17, 1987
    Assignee: Ricoh Company, Ltd.
    Inventors: Shuro Abe, Yoshiro Yabuki, Yasuhiko Takamatsu, Takayuki Yamaguchi, Masatoshi Ohta, Eiji Nakamura