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: 20050014020
    Abstract: The present invention provides an organic electroluminescent device including a pair of electrodes including an anode and a cathode, at least one of which is transparent or translucent; and one or more organic compound layers placed between the pair of electrodes, wherein at least one of the organic compound layers contains a charge transport material that satisfies the following relations: (ta?tT)/ta<0.5 ??Expression (1) D/?<20 ??Expression (2) wherein, in an electric field of 10 V/?m, tT is a transit time of a transient photocurrent waveform; IT is a current value at time tT; Ia is half of the current value IT; ta is a time at the current value Ia on the transient photocurrent waveform; D and ? are respectively a diffusion coefficient and a true mobility obtained from the transient photocurrent waveform; and D/? is the ratio of D to ?.
    Type: Application
    Filed: February 20, 2004
    Publication date: January 20, 2005
    Inventors: Hirohito Yoneyama, Mieko Seki, Masahiro Iwasaki, Katsumi Nukada, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Hiroaki Moriyama, Toru Ishii, Takeshi Agata, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20040081854
    Abstract: An organic electroluminescent element having at least one pair of electrodes including an anode and a cathode, at least one of which having light transmissive, and at least one organic compound layer disposed between the electrodes, wherein the at least one organic compound layer contains at least one kind of non-conjugated polymer having terminal groups, and at least one of terminal groups of the non-conjugated polymer contains a fluorescent substance emitting fluorescence in a solid state.
    Type: Application
    Filed: March 18, 2003
    Publication date: April 29, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Daisuke Okuda, Mieko Seki, Tadayoshi Ozaki, Hirohito Yoneyama, Toru Ishii, Takeshi Agata, Kiyokazu Mashimo, Katsuhiro Sato
  • Publication number: 20040062948
    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: Application
    Filed: March 17, 2003
    Publication date: April 1, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Tadayoshi Ozaki, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Patent number: 6711457
    Abstract: Working machinery for working an elongated work comprises a work stocker configured to store a plurality of works, a work carrying-in machine configured to carry in the works from the work stocker to a working area, a positioning device configured to position the work in the working area, a work clamper provided in the working area and configured to clamp the work in a vertical direction, a plurality of working machines arranged on both sides of the working clamper to work the elongated work from both sides of the work, a plurality of driving devices configured to move the working machines respectively in a longitudinal direction, a controller configured to control the working machines and the driving device, and a work carrying-out machine configured to carry out the work which is completed in working from the working area.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: March 23, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoru Yanaka, Katsuhiro Sato, Yasuo Nagase, Hiroshi Noguchi, Kazuto Sasaki, Hiromichi Nakabayashi, Syouji Inagawa, Masahiro Kasiwa, Hitoshi Furugori, Kouji Oonishi, Nobuhiro Abe
  • Publication number: 20040018384
    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: Application
    Filed: March 4, 2003
    Publication date: January 29, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii, Kiyokazu Mashimo, Katsuhiro Sato
  • Patent number: 6670052
    Abstract: An organic light emitting diode having high luminous intensity, and providing stabilized performance even during repetitive use and easy to manufacture, by using a charge transporting polymer having the following general formulae (I-1) and (I-2). where Ar represents a substituted or non-substituted monovalent polynulear aromatic ring having number of aromatic rings of 3 to 10, X represents a substituted or non-substituted bivalent aromatic group, T represents a bivalent linear hydrocarbon group of 1 to 6 carbon atoms, m represents an integer of 1 to 3 and k represents 0 or 1.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: December 30, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Daisuke Okuda, Hirohito Yoneyama, Mieko Seki, Kiyokazu Mashimo, Takeshi Agata, Katsuhiro Sato
  • Patent number: 6652995
    Abstract: An organic electroluminescence device contains a hole transporting polyesters represented by the following formulae (I-1) or (I-2): where Ar represents a substituted or unsubstituted monovalent polynulear aromatic ring having a number of aromatic rings of 3 to 10, or a substituted or unsubstituted monovalent condensed aromatic ring having a number of aromatic rings of from 2 to 10, X represents a substituted or unsubstituted bivalent aromatic group, T represents a bivalent linear hydrocarbon group of 1 to 6 carbon atoms or bivalent branched hydrocarbon group of 2 to 20 carbon atoms and k represents 0 or 1.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: November 25, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mieko Seki, Daisuke Okuda, Hirohito Yoneyama, Hidekazu Hirose, Kiyokazu Mashimo, Takeshi Agata, Katsuhiro Sato
  • Patent number: 6653701
    Abstract: A semiconductor device having laminated successively a porous semiconductor layer, an inorganic semiconductor layer, and optionally an organic substance layer formed therebetween is disclosed. The semiconductor device is produced by immersing a porous semiconductor layer or a semiconductor layer having an organic substance layer on the surface thereof in a solution containing the elements constituting an inorganic semiconductor or compounds of the elements and forming the inorganic semiconductor layer on the porous semiconductor layer or the organic substance layer in the solution.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: November 25, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihisa Yamazaki, Yoshiyuki Ono, Hokuto Takada, Katsuhiro Sato, Akira Imai, Hidekazu Hirose
  • Publication number: 20030215312
    Abstract: Working machinery for working an elongated work comprises a work stocker configured to store a plurality of works, a work carrying-in machine configured to carry in the works from the work stocker to a working area, a positioning device configured to position the work in the working area, a work clamper provided in the working area and configured to clamp the work in a vertical direction, a plurality of working machines arranged on both sides of the working clamper to work the elongated work from both sides of the work, a plurality of driving devices configured to move the working machines respectively in a longitudinal direction, a controller configured to control the working machines and the driving device, and a work carrying-out machine configured to carry out the work which is completed in working from the working area.
    Type: Application
    Filed: April 26, 2001
    Publication date: November 20, 2003
    Inventors: Satoru Yanaka, Katsuhiro Sato, Yasuo Nagase, Hiroshi Noguchi, Kazuto Sasaki, Hiromichi Nakabayashi, Syouji Inagawa, Masahiro Kasiwa, Hitoshi Furugori, Kouji Oonishi, Nobuhiro Abe
  • Publication number: 20030207187
    Abstract: A charge-transporting polymer is represented by the following general formula (I-1) or (I-2): 1
    Type: Application
    Filed: September 10, 2002
    Publication date: November 6, 2003
    Applicant: 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: 20020182440
    Abstract: An organic electroluminescence device contains a hole transporting polyesters represented by the following formulae (I-1) or (1-2): 1
    Type: Application
    Filed: October 11, 2001
    Publication date: December 5, 2002
    Applicant: Fuji Xerox Co., Ltd
    Inventors: Mieko Seki, Daisuke Okuda, Hirohito Yoneyama, Hidekazu Hirose, Kiyokazu Mashimo, Takeshi Agata, Katsuhiro Sato
  • Publication number: 20020050597
    Abstract: An organic light emitting diode having high luminous intensity, and providing stabilized performance even during repetitive use and easy to manufacture, by using a charge transporting polymer having the following general formulae (I-1) and (I-2).
    Type: Application
    Filed: August 27, 2001
    Publication date: May 2, 2002
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hidekazu Hirose, Daisuke Okuda, Hirohito Yoneyama, Mieko Seki, Kiyokazu Mashimo, Takeshi Agata, Katsuhiro Sato
  • Patent number: 6284365
    Abstract: A method for producing a composite material, wherein compound A having a group selected from an aliphatic hydrocarbon group, aromatic hydrocarbon group and heterocycle-containing group which comprises a functional group which can bond to a compound B allowed to bond to a substrate, then compound B having a functional group which can bond to said functional group in compound A is allowed to bond to compound A is disclosed. Embodiments in which compound A is represented by formula (1); R1M1Y13, formula (2); R1R2M1Y12, formula (3); R1R2R3M1Y1 and formula (4); R1—SH: embodiments in which compound A is a silane compound: the functional group of compound A is a halogen group or an epoxy group: and embodiments in which compound B is selected from aliphatic hydrocarbon compounds, aromatic hydrocarbon compounds and heterocycle-containing compounds having an amino group, carboxyl group or hydroxyl group, are preferred.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: September 4, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Yoshiyuki Ono, Katsuhiro Sato, Akira Imai
  • Patent number: 6252156
    Abstract: Disclosed is an aggregate of metal oxide fine particles having fine pores whose size frequency distribution has a plurality of peaks. Disclosed also is a method preferably used for producing the aggregate of metal oxide fine particles. The method comprises a step of reacting a precursor of a metal oxide with a compound interacting with the precursor in a solvent to yield metal oxide fine particles. Also disclosed are a photosensitive semiconductor comprising a substrate, and a metal oxide porous body having fine pores whose size frequency distribution has a plurality of peaks and a method preferably used for manufacturing the photosensitive semiconductor electrode. This photosensitive semiconductor electrode has a high energy conversion efficiency and is preferably used in a photoelectric converter.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: June 26, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiyuki Ono, Hidekazu Hirose, Katsuhiro Sato, Akira Imai
  • Patent number: 6153824
    Abstract: Disclosed are a photo-semiconductive electrode that has a high light-to-electricity conversion efficiency and excellent stability and can be prepared economically and easily, and a photo-electric cell using the photo-semiconductive electrode. The photo-electric cell comprises a photo-semiconductive electrode having an electroconductive base and a light-to-electricity conversion layer formed thereon, and a counter electrode, such that the photo-semiconductive electrode and the counter electrode contact an electrolyte, wherein the light-to-electricity conversion layer holds an organic pigment. In the photo-electric cell, the photo-semiconductive electrode and the counter electrode are used integrally and disposed so that these electrodes contact the electrolyte. The organic pigment suited for use in the layer is selected from the group consisting of: phthalocyanine pigment such as titanyl phthalocyanine, chlorogallium phthalocyanine and hydroxygallium phthalocyanine; and naphthalocyanine pigments.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: November 28, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hokuto Takada, Hidekazu Hirose, Yoshiyuki Ono, Akira Imai, Katsuhiro Sato
  • Patent number: 6140404
    Abstract: The present invention provides a non-linear optical material having an excellent non-linear optical effect which is insusceptible to modification of a cuprous halide incorporated therein. The present invention also provides a process which enables the preparation of such a non-linear optical material at a low temperature by means of a simple apparatus. The non-linear optical material of the present invention exhibits a nonlinear response to incident light and comprises a particulate cuprous halide dispersed in a matrix, said particulate cuprous halide having been separated out with the reaction of a functional group contained in a matrix-forming substance having a functional group, wherein said matrix contains a compound for inhibiting the modification of said cuprous halide.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: October 31, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiyuki Ono, Katsuhiro Sato
  • Patent number: 6045856
    Abstract: A resistive element is produced by forming a substrate glazed with glass, printing or coating a resistive element-forming paste onto the substrate, calcining the paste in a first heating step to form an element comprising a film on the substrate and subjecting the resulting element to a heat treatment in a second heating step to diffuse an amount of glass into the film to increase resistivity of the element.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: April 4, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kaoru Torikoshi, Katsuhiro Sato, Hiroyuki Tanaka, Fumiaki Tambo, Yutaka Akasaki
  • Patent number: 6034351
    Abstract: A cleaning arrangement for removing sputter attached to a welding torch nozzle includes a cylindrical container with screen at the lower end thereof, shot material held by the screen, an air injection nozzle disposed above the screen, a suction tube under the nozzle and a torch nozzle sensor to control the sputter removal process.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: March 7, 2000
    Inventors: Katsuhiro Sato, Hiroyuki Izumi, Motoaki Maruyama, Toshiya Hayashida, Yusuke Harayama, Kenji Yoshida, Kenji Hiroi
  • Patent number: 6028265
    Abstract: The photo-semiconducting electrode of the present invention comprises a semiconducting substrate, a chemically adsorbed film formed thereon composed of at least one compound selected from the compounds represented by the formulas: formulas (I) R.sup.1 M.sup.1 Y.sub.1.sub.3, (II) R.sup.1 R.sup.2 M.sup.1 Y.sup.1.sub.2, (III) R.sup.1 R.sup.2 R.sup.3 M.sup.1 Y.sup.1 and (IV) R.sup.1 --SH, respectively, and a dye which is fixed to the surface of the chemically adsorbed film and has a functional group capable of reacting with a halogen atom. Because of this, the photo-semiconductor electrode of the present invention is capable of efficiently absorbing solar light and performing energy conversion and superior in photoelectric conversion efficiency, stability and durability. In addition, it can be easily produced.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: February 22, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiyuki Ono, Akira Imai, Hidekazu Hirose, Katsuhiro Sato
  • Patent number: 5963360
    Abstract: The present invention provides a nonlinear optical element having a sufficient thickness that can be used as a thin film insusceptible to crack and a process for the preparation thereof. A novel nonlinear optical element which gives a nonlinear response to incident light is provided, comprising finely divided grains of a semiconductor or metal, which grains have been separated out with the reaction of a functional group in a matrix-forming substance containing said functional group, dispersed in a matrix. A process for the preparation of a nonlinear optical element which gives a nonlinear response to incident light is also provided, which comprises mixing a solution of a matrix-forming substance containing a functional group with a metal, a semiconductor or a precursor thereof to form a uniform solution, and then allowing said functional group to undergo reaction to form a matrix while allowing finely divided grains of said metal or semiconductor to be separated out in said matrix.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: October 5, 1999
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsuhiro Sato, Yoshiyuki Ono, Shigetoshi Nakamura