Patents by Inventor Mariko Sano

Mariko Sano 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).

  • Material for lighting emitting device and light emitting device
    Patent number: 8114529
    Abstract: The invention provides a light emitting device having a low driving voltage and excellent durability by a material for a light emitting device expressed by the general formula (1): wherein each of R1, R2, R3, R4, R5 and R6 may be the same or different and is selected from hydrogen, an alkyl group, and an aryl group, A represents an n-valent aromatic hydrocarbon group, B represents an alkyl group or an aryl group, X represents carbon or nitrogen, n represents a natural number from 2 to 6, and n substituents having a phenanthroline skeleton or a benzoquinoline skeleton may be the same or different.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: February 14, 2012
    Inventors: Daisuke Kitazawa, Tsuyoshi Tominaga, Mariko Sano, Takeshi Ishigaki, Kazunori Sugimoto
  • Material for Light Emitting Device and Light Emitting Device
    Publication number: 20070267958
    Abstract: The invention provides a light emitting device having a low driving voltage and excellent durability by a material for a light emitting device expressed by the general formula (1): where in each of R1, R2, R3, R4, R5 and R6 may be the same or different and is selected from hydrogen, an alkyl group, and an aryl group, A represents an n-valent aromatic hydrocarbon group, B represents an alkyl group or an aryl group, X represents carbon or nitrogen, n represents a natural number from 2 to 6, and n substituents having a phenanthroline skeleton or a benzoquinoline skeleton may be the same or different.
    Type: Application
    Filed: August 23, 2004
    Publication date: November 22, 2007
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Daisuke Kitazawa, Tsuyoshi Tominaga, Mariko Sano, Takeshi Ishigaki, Kazunori Sugimoto