Patents by Inventor Seiichi Yogi

Seiichi Yogi 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).

  • Organic compound and organic light-emitting device
    Patent number: 7749617
    Abstract: The present invention provides a novel organic compound capable of simultaneously emitting fluorescence and phosphorescence. The organic compound according to the present invention is an organic compound consisting of only elemental hydrogen and at least two kinds of elements selected from the group consisting of elements belonging to the thirteenth group to the seventeenth group of the second period to the fifth period of the periodic table, and being capable of simultaneously emitting fluorescence and phosphorescence at a temperature of from ?30° C. or more and 100° C. or less.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: July 6, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Suzuki, Kazunori Ueno, Akira Tsuboyama, Seiichi Yogi
  • Organic compound and organic light-emitting device
    Publication number: 20060051616
    Abstract: The present invention provides a novel organic compound capable of simultaneously emitting fluorescence and phosphorescence. The organic compound according to the present invention is an organic compound consisting of only elemental hydrogen and at least two kinds of elements selected from the group consisting of elements belonging to the thirteenth group to the seventeenth group of the second period to the fifth period of the periodic table, and being capable of simultaneously emitting fluorescence and phosphorescence at a temperature of from ?30° C. or more and 100° C. or less.
    Type: Application
    Filed: September 2, 2005
    Publication date: March 9, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koichi Suzuki, Kazunori Ueno, Akira Tsuboyama, Seiichi Yogi
  • Organic boron compound, process for producing the compound and organic luminescence device using the compound
    Patent number: 6461749
    Abstract: An organic boron compound effective for constituting a functional layer in an organic luminescence device is represented by formula (1) below: wherein Ar1 denotes an optionally substituted aryl group or heterocyclic group; R1-R11 independently denote hydrogen, halogen, alkyl, alkenyl, amino, alkoxy, formyl, nitrile, aroyl, alkyloyl, aryl, aralkyl or heterocyclic group, each optionally substituted with the proviso that an adjacent one or more pairs of R1-R11 can form a condensed ring. The organic boron compound can be produced through a process including (A) a step of reacting an aromatic ketone compound X with an aromatic ketone compound or an aromatic aldehyde compound in the presence of ammonium chloride, and (B) a step of reacting a product of the step (A) with an aromatic boric acid compound.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: October 8, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunori Ueno, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Seiichi Yogi
  • Novel organic boron compound, process for producing the compound and organic luminescnece device using the compound
    Publication number: 20020008465
    Abstract: An organic boron compound effective for constituting a functional layer in an organic luminescence device is represented by formula (1) below: 1
    Type: Application
    Filed: March 28, 2001
    Publication date: January 24, 2002
    Inventors: Kazunori Ueno, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Seiichi Yogi