Patents by Inventor Yuka Ito

Yuka Ito 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).

  • BLACK COLOR MATERIAL AND TONER
    Publication number: 20090240065
    Abstract: The black color material includes a condensation product of a pyrrole compound represented by the following formula (1) and a squaric acid represented by the following formula (2):
    Type: Application
    Filed: September 30, 2008
    Publication date: September 24, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinji HASEGAWA, Minquan TIAN, Yuka ITO, Kazuhiko HIROKAWA, Miho WATANABE, Makoto FURUKI
  • IMAGE-FORMING MATERIAL
    Publication number: 20090227793
    Abstract: The image-forming material includes a perimidine-based squarylium dye represented by the following formula (I):
    Type: Application
    Filed: September 26, 2008
    Publication date: September 10, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Minquan TIAN, Yuka ITO, Shinji HASEGAWA, Kazuhiko HIROKAWA, Miho WATANABE, Makoto FURUKI, Takashi MATSUBARA, Kazunori ANAZAWA, Tomoko MIYAHARA, Suguru NAKASO
  • BLACK COLOR MATERIAL AND TONER
    Publication number: 20090081574
    Abstract: A black color material includes a squarylium compound represented by the following formula (1); and a blue color material:
    Type: Application
    Filed: July 24, 2008
    Publication date: March 26, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinji HASEGAWA, Minquan TIAN, Yuka ITO, Kazunori ANAZAWA, Kazuhiko HIROKAWA, Takashi MATSUBARA, Kazunaga HORIUCHI, Tomoko MIYAHARA, Makoto FURUKI
  • TONER, ELECTROSTATIC LATENT IMAGE DEVELOPER, MAGNETIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
    Publication number: 20090075196
    Abstract: The present invention provides a toner including a binder resin and metal particles containing Au, Ag, Cu, Pt, or an alloy thereof having a volume average particle diameter of from about 1 nm to about 300 nm, or an average maximum length of from about 10 nm to about 200 nm. The invention also provides a novel toner including metal particles which absorb light at plasmon frequencies.
    Type: Application
    Filed: March 21, 2008
    Publication date: March 19, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takashi MATSUBARA, Kazunori Anazawa, Yuka Ito, Minquan Tian, Shinji Hasegawa, Kazuhiko Hirokawa, Makoto Furuki, Kazunaga Horiuchi, Tomoko Miyahara
  • DISPLAY MEDIUM, DISPLAY DEVICE AND DISPLAY METHOD
    Publication number: 20080278797
    Abstract: A display medium includes: a first substrate having transparency and provided with a transparent electrode on one face thereof, a member having a plurality of penetration holes, the member being placed on a surface of the transparent electrode, the penetration holes penetrating the member from the transparent electrode surface side, the ratio of the length of each of the penetration holes to the largest hole diameter being two or more; a second substrate placed so as to face the transparent electrode side of the first substrate; an electrolytic solution containing a metal ion and placed so as to fill a space between the first and second substrates; and a counter electrode placed in a position so as to be insulated from the transparent electrode and in contact with the electrolytic solution.
    Type: Application
    Filed: February 27, 2008
    Publication date: November 13, 2008
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Takashi MATSUBARA, Kazunori Anazawa, Yuka Ito, Minquan Tian, Shinji Hasegawa, Kazuhiko Hirokawa, Makoto Furuki, Kazunaga Horiuchi, Tomoko Miyahara
  • Colorant and toner
    Publication number: 20080166650
    Abstract: A colorant comprising an aggregate of a molecule having a squarylium skeleton and having a maximum absorption wavelength at about 500 nm to about 600 nm in a molecular dispersion state.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 10, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinji Hasegawa, Kazunori Anazawa, Yuka Ito, Minquan Tian, Kazuhiko Hirokawa, Makoto Furuki, Kazunaga Horiuchi, Takashi Matsubara, Tomoko Miyahara, Miho Watanabe
  • Magnetic recording medium
    Patent number: 6110584
    Abstract: A magnetic recording medium having an excellent sliding durability, and including a magnetic layer of a metal magnetic thin film formed on a non-magnetic support body and a carbon protection film formed on the magnetic layer. Recording and/or reproduction is carried out by sliding a magnetic head. The carbon protection film shows, in a Raman spectrum obtained by Raman spectrum analysis using an argon ion laser having a wavelength of 514.5 nm, an intensity ratio A/B of 2 or above for a main peak intensity A appearing in the vicinity of wave number 1550 cm.sup.-1 with respect to a background intensity B.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: August 29, 2000
    Assignee: Sony Corporation
    Inventors: Ryoichi Hiratsuka, Yuka Ito, Kazuo Hoshi