Patents by Inventor Katsuhiro Sato

Katsuhiro Sato 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).

  • Publication number: 20070281076
    Abstract: An organic electroluminescent device includes one or more organic compound layers sandwiched between a pair of electrodes, at least one of the electrodes being transparent or semi-transparent, wherein there is provided a layer containing a charge transport polyester comprising a repeating unit containing at least one type selected from structures represented by the following formulae (I-1) and (I-2), as a substructure, so as to be in contact with at least one electrode of the pair of electrodes; and a difference between the ionization potential of the charge transport polyester contained in the layer in contact with the one electrode, and the work function of the surface of the one electrode is within a range of from 0 eV to 0.7 eV.
    Type: Application
    Filed: January 16, 2007
    Publication date: December 6, 2007
    Inventors: Daisuke Okuda, Katsuhiro Sato, Kiyokazu Mashimo, Takeshi Agata, Toru Ishii, Akira Imai, Tadayoshi Ozaki, Hidekazu Hirose, Hirohito Yoneyama, Mieko Seki, Yohei Nishino, Koji Horiba
  • Publication number: 20070252519
    Abstract: Provided are a thiophene-containing compound represented by the following formula (X-1), and an organic electroluminescent device that includes a pair of electrodes and an organic compound layer disposed therebetween. The organic compound layer includes a charge-transporting polyester having a repeating structure containing at least one structure selected from the structures represented by the following formulae (I-1) and (I-2) as its partial structure. In formula (X-1), Ar1 represents a substituted or unsubstituted monovalent aromatic group; and R1 to R4 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n? is an integer of 1 to 5.
    Type: Application
    Filed: December 12, 2006
    Publication date: November 1, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Hidekazu Hirose, Takeshi Agata, Koji Horiba, Akira Imai, Tadayoshi Ozaki, Yohei Nishino, Hirohito Yoneyama, Daisuke Okuda, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20070148493
    Abstract: The invention provides an organic electroluminescence device having a pair of electrodes at least one of which is transparent or translucent and plural organic compound layers positioned between the pair of electrodes, at least one of the plural organic compound layers being a hole transport layer in which an electron transport material is mixed with at least one hole transport polymer, and at least one of the plural organic compound layers containing a luminescent material.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 28, 2007
    Inventors: Hirohito Yoneyama, Yohei Nishino, Mieko Seki, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato, Koji Horiba, Akira Imai
  • Patent number: 7183009
    Abstract: Disclosed is an organic electroluminescent element comprising at least one pair of electrodes comprising an anode and a cathode, at least one of which having light permeability, and one or a plurality of organic compound layers held between the electrodes, wherein at least one organic compound layer contains at least one kind of charge-transferable polyether comprising a repetition unit containing at least one partial structure selected from the group consisting of the following general formulae (I-1) and (I-2)
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: February 27, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20070021572
    Abstract: The invention provides a diamine compound polymer having a 1,3-phenylene group selected from structural formulae represented by formulae (I-1) and (I-2): where, in the formulae (I-1) and (I-2), A represents a structure represented by the following formula (II); R represents a hydrogen atom, an alkyl group, a substituted or non-substituted aryl group, or a substituted or non-substituted aralkyl group; Y represents a divalent alcoholic residue; Z represents a divalent carboxylic acid residue; B and B? independently represent —O—(Y—O)n—R or —O—(Y—O)n—CO—Z—CO—O—R? (where R, Y and Z have the same meanings as described above, and R? represents an alkyl group, a substituted or non-substituted aryl group, or a substituted or non-substituted aralkyl group); n represents an integer of 1 to 5; and p represents an integer of 5 to 5000; where, in the formula (II), Ar represents a substituted or non-substituted aromatic group; X represents a substituted or non-substituted divalent 1,3-phenylene group; T represents
    Type: Application
    Filed: April 7, 2006
    Publication date: January 25, 2007
    Inventors: Daisuke Okuda, Katsuhiro Sato, Koji Horiba, Kiyokazu Mashimo, Takeshi Agata, Toru Ishii, Tadayoshi Ozaki, Hidekazu Hirose, Hirohito Yoneyama, Mieko Seki, Yohei Nishino
  • Patent number: 7166859
    Abstract: The present invention provides an organic semiconductor transistor element that includes at least a source electrode, a drain electrode, an organic semiconductor formed to be electrically conductive to the source electrode and the drain electrode, and a gate electrode which is both insulated from the organic semiconductor and capable of applying an electric field. The organic semiconductor includes a polymer compound containing an aromatic tertiary amine.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: January 23, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Mieko Seki, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato, Hiroaki Moriyama, Yohei Nishino
  • Publication number: 20060293500
    Abstract: The present invention provides a thiophene-containing compound represented by Formula (I) and a thiophene-containing compound polymer using the thiophene-containing compound. In Formula (I), Ar1 represents a substituted or unsubstituted monovalent aromatic group; X represents a divalent straight-chain hydrocarbon group having 1 to 6 carbon atoms, a divalent branched-chain hydrocarbon group having 2 to 10 carbon atoms, or a substituted or unsubstituted divalent aromatic group; R1 to R5 each independently represent a hydrogen atom, an alkyl group, a cyano group, a halogen group, a substituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; 1 represents an integer from 1 to 5; and m and k each independently represent 0 or 1.
    Type: Application
    Filed: April 14, 2006
    Publication date: December 28, 2006
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Yohei Nishino, Mieko Seki, Takeshi Agata, Kiyokazu Mashimo, Katsuhiro Sato, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Toru Ishii
  • Patent number: 7153980
    Abstract: The present invention relates to a thiophene-containing compound and a thiophene-containing compound polymer which are useful for organo-electronic devices such as electrophotographic photoreceptors (photosensitive elements), organic electroluminescent elements and organic transistors. More specifically, the invention relates to a thiophene-containing compound and a thiophene-containing compound polymer which are excellent in terms of both charge-transporting properties and luminous properties.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 26, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Takeshi Agata, Katsuhiro Sato, Kiyokazu Mashimo, Hirohito Yoneyama, Hidekazu Hirose
  • Publication number: 20060267487
    Abstract: A method for producing a polymer organic electronic material comprising: synthesizing a polymer organic electronic material by condensing a precursor monomer for the polymer organic electronic material in the presence of a metal catalyst, preparing a polymer organic electronic material solution by dissolving the polymer organic electronic material in an organic solvent, and removing metal ions, which originate from the metal catalyst, from the polymer organic electronic material solution by using an ion exchange resin; a polymer organic electronic material which can be obtained by the method; and an organic electroluminescent device which uses the polymer organic electronic material.
    Type: Application
    Filed: February 10, 2006
    Publication date: November 30, 2006
    Inventors: Tadayoshi Ozaki, Mieko Seki, Yohei Nishino, Koji Horiba, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato, Hiroaki Moriyama
  • Publication number: 20060220081
    Abstract: After a ferroelectric capacitor is formed, an Al wiring (conductive pad) connected to the ferroelectric capacitor is formed. Then, a silicon oxide film and a silicon nitride film are formed around the Al wiring. Thereafter, as a penetration inhibiting film which inhibits penetration of moisture into the silicon oxide film, an Al2O3 film is formed.
    Type: Application
    Filed: July 27, 2005
    Publication date: October 5, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Kouichi Nagai, Hitoshi Saito, Kaoru Sugawara, Makoto Takahashi, Masahito Kudo, Kazuhiro Asai, Yukimasa Miyazaki, Katsuhiro Sato, Kaoru Saigoh
  • Publication number: 20060153103
    Abstract: A music reproduction apparatus (200) receives, from a tuning server (400), radio station information making up genres of music distributed from respective radio servers (300) and URLs of the respective radio servers (300). When a genre and a keyword representing characteristics of music are input to the music reproduction apparatus (200), the music reproduction apparatus (200) requests the radio server (300) distributing the music of the input genre to transmit the music information on the basis of the radio station information. The requested radio server (300) transmits one or more keywords to the music reproduction apparatus (200) as music information indicative of the characteristic of the music being broadcasted now. When the input keyword and the keyword included in the music information match with each other, the music reproduction apparatus (200) receives broadcast of the radio server (300) that has transmitted the music information.
    Type: Application
    Filed: May 28, 2004
    Publication date: July 13, 2006
    Inventor: Katsuhiro Sato
  • Publication number: 20060149398
    Abstract: A content capturing device applies to a music reproducing device. The music reproducing device has a function as an Internet radio receiver of receiving via the Internet a program provided from a radio server at a broadcast station. When a predetermined operation is performed while an arbitrary piece of music is being received by means of this function, the radio server sends music information related to the music being received and according to the operating environment of the music reproducing device, to the music reproducing device. When an operation of making a request for downloading is performed by the music reproducing device, data for storage according to the music information is downloaded from the music distribution server to the music reproducing device. Therefore, it is possible to download the data for storage on a desired piece of music to the music reproducing device in an easy manner and in a form according to the operating environment of the music reproducing device.
    Type: Application
    Filed: February 12, 2004
    Publication date: July 6, 2006
    Inventors: Katsuhiro Sato, Toru Kamimura
  • Patent number: 7060783
    Abstract: The present invention provides a diamine compound polymer and a method for producing the diamine compound polymer. The diamine compound polymer of the present invention has a condensed aromatic group represented by the following formulae (1-1) and (1-2). A represents a structure represented by the following formula (II-1). Y and Z represent divalent hydrocarbon groups. B and B? each independently represents a group represented by —O—(Y—O)m-H or —O—(Y—O)m-CO-Z-CO—OR?, wherein R? is a hydrogen atom, an aralkyl group, an aryl group, or an aralkyl group. m represents an integer from 1 to 5; and p represents an integer from 5 to 5000. Ar represents a monovalent aromatic group. X represents a divalent condensed aromatic group. T represents a divalent linear hydrocarbon group having 1 to 6 carbon atoms or a divalent branched hydrocarbon group having 2 to 10 carbon atoms. k and n each represents an integer of 0 or 1.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: June 13, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Hiroaki Moriyama, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20060067491
    Abstract: A contents reproducing apparatus includes a main CPU, and in a radio mode, the main CPU causes a DSP to decode broadcast data included in a radio packet signal input via a LAN controller, and decoded PCM data is input to a D/A conversion circuit. Consequently, a sound of Internet radio broadcasting is output from a speaker. Then, when there is a telephone call, the main CPU switches to a telephone mode. That is, receiving speech data included in a telephone packet signal input via the LAN controller is decoded by the DSP, and decoded PCM data is input to a PCM codec. Consequently, a receiving speech sound is output from a speaker of a receiver. It is noted that in a case that a radio program during reception is a pay program, the main CPU does not switch to the telephone mode.
    Type: Application
    Filed: November 12, 2003
    Publication date: March 30, 2006
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Katsuhiro Sato, Toru Kamimura
  • Publication number: 20060046094
    Abstract: The invention provides an organic electroluminescence device including an organic compound layer, wherein the organic compound layer is constituted of two or more layers at least including a light emitting layer and a buffer layer, at least one layer of the organic compound layers contains a charge-transporting polyester, which includes a repeating unit containing, as a partial structure, at least one selected from structures represented by following general formulas (I-1) and (I-2); and the buffer layer is provided adjacent to the anode and contains at least a charge injecting material: [chem 1] wherein, in the general formulas (I-1) and (I-2), Ar represents a substituted or non-substituted monovalent aromatic group; X represents a substituted or non-substituted divalent aromatic group; k, m and l each represents 0 or 1; and T represents a linear divalent hydrocarbon with 1 to 6 carbon atoms or a branched hydrocarbon with 2 to 10 carbon atoms.
    Type: Application
    Filed: February 10, 2005
    Publication date: March 2, 2006
    Inventors: Yohei Nishino, Katsuhiro Sato, Mieko Seki, Kiyokazu Mashimo, Takeshi Agata, Toru Ishii, Hiroaki Moriyama, Hidekazu Hirose, Tadayoshi Ozaki, Daisuke Okuda, Hirohito Yoneyama
  • Patent number: 6936679
    Abstract: A charge-transporting polymer is represented by the following general formula (I-1) or (I-2): wherein A represents a group represented by the following general formula (II-1):
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: August 30, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20050104097
    Abstract: The present invention provides an organic semiconductor transistor element that includes at least a source electrode, a drain electrode, an organic semiconductor formed to be electrically conductive to the source electrode and the drain electrode, and a gate electrode which is both insulated from the organic semiconductor and capable of applying an electric field. The organic semiconductor includes a polymer compound containing an aromatic tertiary amine.
    Type: Application
    Filed: October 7, 2004
    Publication date: May 19, 2005
    Inventors: Hidekazu Hirose, Mieko Seki, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato, Hiroaki Moriyama, Yohei Nishino
  • Patent number: 6872476
    Abstract: An organic electro-luminescent device comprising one or more organic compound layers sandwiched between a pair of electrodes, at least one of which electrodes is transparent or semi-transparent, wherein at least one of the one or more organic compound layers comprises at least one polyurethane compound having a repeating unit represented by the following general formula (I). At least one of A and B in general formula (I) represents a divalent group represented by one of the following general formulae (II) to (VI).
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: March 29, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tadayoshi Ozaki, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20050059730
    Abstract: The present invention relates to a thiophene-containing compound and a thiophene-containing compound polymer which are useful for organo-electronic devices such as electrophotographic photoreceptors (photosensitive elements), organic electroluminescent elements and organic transistors. More specifically, the invention relates to a thiophene-containing compound and a thiophene-containing compound polymer which are excellent in terms of both charge-transporting properties and luminous properties.
    Type: Application
    Filed: February 20, 2004
    Publication date: March 17, 2005
    Inventors: Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Takeshi Agata, Katsuhiro Sato, Kiyokazu Mashimo, Hirohito Yoneyama, Hidekazu Hirose
  • Publication number: 20050033011
    Abstract: The present invention provides a diamine compound polymer and a method for producing the diamine compound polymer. The diamine compound polymer of the present invention has a condensed aromatic group represented by the following formulae (1-1) and (1-2). A represents a structure represented by the following formula (II-1). Y and Z represent divalent hydrocarbon groups. B and B? each independently represents a group represented by —O—(Y—O)m—H or —O—(Y—O)m—CO-Z-CO—OR?, wherein R? is a hydrogen atom, an aralkyl group, an aryl group, or an aralkyl group. m represents an integer from 1 to 5; and p represents an integer from 5 to 5000. Ar represents a monovalent aromatic group. X represents a divalent condensed aromatic group. T represents a divalent linear hydrocarbon group having 1 to 6 carbon atoms or a divalent branched hydrocarbon group having 2 to 10 carbon atoms. k and n each represents an integer of 0 or 1.
    Type: Application
    Filed: February 20, 2004
    Publication date: February 10, 2005
    Inventors: Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Hiroaki Moriyama, Kiyokazu Mashimo, Katsuhiro Sato