Patents by Inventor Katsumi Abe

Katsumi Abe 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: 20130280652
    Abstract: An object of the invention is to provide a method of making a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by formula (1) and formula (2) and an asymmetric p-terphenyl compound represented by formula (3)
    Type: Application
    Filed: June 12, 2013
    Publication date: October 24, 2013
    Inventors: Shinya NAGAI, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
  • Patent number: 8559226
    Abstract: According to one embodiment, a threshold detecting method for detecting threshold values of nonvolatile semiconductor memory cells comprises applying a preset voltage to a word line connected to the memory cells, and performing bit-line sense at two different timings during discharging of one of a bit line connected to the memory cells and a node corresponding to the bit line, while a potential of the word line is kept constant.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: October 15, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsumi Abe, Masahiro Yoshihara, Toshiaki Edahiro
  • Publication number: 20130266343
    Abstract: An object of the present invention is to provide an electrophotographic photosensitive body having improved electrophotographic characteristics such as sensitivity and residual potential and also having excellent durability. The present invention provides an electrophotographic photosensitive body having a layer containing at least one specific p-terphenyl compound and at least one polycarbonate resin represented by the general formula (I): in a mass ratio of the p-terphenyl compound to the polycarbonate resin within the range of 2:8 to 7:3.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Inventors: Katsumi Abe, Atsushi Takesue, Takehiro Nakajima, Makoto Koike, Shinya Nagai
  • Patent number: 8525175
    Abstract: An electronic device includes: multiple electronic elements each including a semiconductor film; and an element isolation region provided between adjacent ones of the multiple electronic elements, the element isolation region including a semiconductor film having a bandgap of 1.95 eV or more, an insulating film, and an element isolation electrode, the element isolation electrode being an electrode which is separated from the semiconductor film of the element isolation region by the insulating film and is applied with a voltage so as to increase a resistance of the semiconductor film of the element isolation region, to thereby electrically isolate the multiple electronic elements from one another.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sho Suzuki, Katsumi Abe, Ryo Hayashi, Hideya Kumomi
  • Publication number: 20130214854
    Abstract: Provided is a semiconductor device, including an electrode, a first insulator, a first semiconductor having a bandgap of 2 eV or greater, a second insulator, and a second semiconductor, which are stacked on one another, and at least further including one or more electrodes in contact with the first semiconductor and two or more electrodes in contact with the second semiconductor.
    Type: Application
    Filed: October 31, 2011
    Publication date: August 22, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Katsumi Abe, Hideya Kumomi, Ryo Hayashi, Tatsuya Iwasaki
  • Patent number: 8507910
    Abstract: An active matrix display apparatus includes a transistor, a storage capacitor, and a light-emitting element formed on a substrate. The transistor includes a source electrode, a drain electrode, and a gate electrode. The storage capacitor has a multilayered structure of a first electrode, a dielectric layer, and a second electrode stacked in this order on the substrate, and the light-emitting element has a multilayered structure of a third electrode, a light-emitting layer, and a fourth electrode stacked in this order on the substrate. The first electrode is electrically connected to the gate electrode of the transistor, and at least a part of the storage capacitor is disposed between the substrate and the light-emitting element. All of the substrate, the first electrode, the second electrode, and the third electrode are formed from a material transmitting a visible light emitted by the light-emitting element.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: August 13, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Ofuji, Katsumi Abe, Masafumi Sano, Hideya Kumomi, Ryo Hayashi
  • Patent number: 8486594
    Abstract: An object of the invention is to provide: a p-terphenyl compound mixture useful as a charge-transporting agent which has improved solubility in organic solvents to thereby diminish a cracking phenomenon, which poses problems concerning photoreceptor characteristics, and can realize an electrophotographic photoreceptor having high sensitivity and high durability; and an electrophotographic photoreceptor employing the compound mixture. The invention relates to: a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by the following general formula (1) and general formula (2) and an asymmetric p-terphenyl compound represented by the following general formula (3) which has both a group of substituents of the compound represented by general formula (1) and a group of substituents of the compound represented by general formula (2); and an electrophotographic photoreceptor containing the compound mixture.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: July 16, 2013
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Shinya Nagai, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
  • Patent number: 8455106
    Abstract: An acrylic rubber-metal composite, which comprises a metal, (a) an undercoat adhesive layer comprising phenol resin and epoxy resin, (b) an overcoat adhesive layer comprising phenol resin, halogenated polymer, and a metal oxide, and (c) an acrylic rubber layer, the layers (a), (b) and (c) being successively laid on the surface of the metal, having not only a distinguished initial adhesiveness, but also a good water resistance, where the acrylic rubber is bonded to the metal without surface treatment of the metal such as a chemical treatment, e.g. zinc phosphate treatment, etc., a blast treatment, or a primer treatment.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: June 4, 2013
    Assignee: NOK Corporation
    Inventors: Katsumi Abe, Kiyofumi Fukasawa
  • Publication number: 20130071780
    Abstract: [Problems] To provide a novel compound useful as an electric charge transporting agent having a high carrier mobility, and making it possible not only to stably form a photosensitive layer without precipitating crystals or developing pinholes when the photosensitive layer is being formed but also to prepare an organic photosensitive material for electrophotography featuring a high sensitivity and a low residual potential. [Means for Solution] The compound is represented by the following general formula (1); In the general formula (1), R1 to R7 are, for example, alkyl groups, X1 is, for example, —CH?CH—CH?CH2, X2 is, for example, —CH?CH2, and k and l are integers of 0 to 4.
    Type: Application
    Filed: June 22, 2011
    Publication date: March 21, 2013
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Shigetaka Numazawa, Katsumi Abe, Kiyotaka Ihara, Takehiro Nakajima, Makoto Koike
  • Patent number: 8398087
    Abstract: A bonded piston seal, which comprises a metal ring, and a rubbery elastomer seal as vulcanization-bonded thereto expect the sliding site along which a mating seal member slides, where the rubbery elastomer seal is partially bonded to the metal ring through an adhesive layer, wherein the adhesive layers comprises (a) an underlayer adhesive layer comprising a phenol resin and an epoxy resin, and (b) an overlayer adhesive layer comprising a phenol resin, a halogenated polymer, and a metal oxide. Not only the distinguished initial adhesiveness, but also the distinguished water-resistance can be obtained by providing (a) the underlayer adhesive layer of the afore-mentioned components and (b) the overlayer adhesive layer of the afore-mentioned components.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: March 19, 2013
    Assignee: NOK Corporation
    Inventors: Tomoaki Nishimura, Yoshiyuki Kanzaki, Kiyofumi Fukasawa, Katsumi Abe
  • Patent number: 8304298
    Abstract: To provide an enhancement-depletion (E/D) inverter which can be easily manufactured, in the present invention, a method of manufacturing an inverter which is composed of an oxide semiconductor in which a channel layer includes at least one element selected from In, Ga and Zn formed on a same substrate, the inverter being the E/D inverter having plural thin film transistors, is characterized by comprising the steps of: forming a first transistor and a second transistor, the thicknesses of the channel layers of the first and second transistors being mutually different; and executing heat treatment to at least one of the channel layers of the first and second transistors.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: November 6, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Ofuji, Katsumi Abe, Ryo Hayashi, Masafumi Sano, Hideya Kumomi
  • Patent number: 8284612
    Abstract: According to one embodiment, a semiconductor memory device includes memory cells, holding circuits, and a logical gate chain. The memory cells are associated with columns. The holding circuits are associated with the columns and capable of holding first information indicating whether associated one of the columns is a verify-failed column or not. The logical gate chain includes a plurality of first logical gates associated with the columns and connected in series. Each of the first logical gates outputs a logical level to a next-stage first logical gate in a series connection. The logical level indicates whether the verify-failed column exists or not based on the first information in associated one of the holding circuit. The content indicated by the logical level output from each of the first logical gates is inverted using one of the first logical gates associated with the verify-failed column as a border.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 9, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yoshihara, Teruo Takagiwa, Katsumi Abe
  • Publication number: 20120250424
    Abstract: A sense amplifier circuit is connected to a bit-line and senses and amplifies a signal read from a memory cell. A first data latch is connected to a sense amplifier via a first bus. A second data latch is connected to a second bus. A plurality of circuit groups are repeatedly provided in a first direction, each circuit group comprising one sense amplifier circuit and one first data latch. The second data latch is provided between the circuit groups and an input/output buffer.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masahiro YOSHIHARA, Naofumi Abiko, Katsumi Abe
  • Publication number: 20120250425
    Abstract: According to one embodiment, the semiconductor memory includes a memory cell array which includes memory cells to store data, a buffer circuit which includes latches, each of the latches including transistors as control elements and a flip-flop, and a control circuit which turns off the transistors to deactivate one or more of the latches.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Inventors: Masahiro YOSHIHARA, Katsumi ABE
  • Patent number: 8274845
    Abstract: A nonvolatile semiconductor memory device is provided, which includes an input buffer provided with a first inverter that can electrically adjust circuit threshold values, a circuit: threshold value monitor provided with a second inverter having the same circuit configuration as the first inverter to detect the circuit threshold values of the first inverter when the input and output of the second inverter are short-circuited, respectively, a memory storing parameter values that correspond to the circuit threshold values detected by the circuit threshold value monitor, and a data-reader circuit reading the parameter values given to the first inverter from the memory.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: September 25, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsumi Abe, Masahiro Yoshihara, Masaru Koyanagi
  • Publication number: 20120212471
    Abstract: To provide a liquid crystal display capable of implementing a symmetrical frame and a narrower frame without lowering drive capability of a common drive circuit. [Solution] A liquid crystal display substrate 10 has a data driver circuit 2 and a gate driver circuit 3 for driving the liquid crystal display integrated thereon together with a common drive circuit 4, where common voltages VCOMH and VCOML are applied from the outside through a pad. The gate driver circuit 3 is placed to be adjacent to one of the four terminals of the liquid crystal display. The common drive circuit 4 is placed to be adjacent to the terminal opposite to where the gate driver circuit 3 is placed and as close to the pad as possible while having almost the same width as the area of the gate driver circuit 3. The pad close to where the common drive circuit 4 is placed is used as the pad for applying the common voltages VCOMH and VCOML.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 23, 2012
    Applicant: NEC Corporation
    Inventor: Katsumi Abe
  • Patent number: 8247144
    Abstract: An object of the invention is to provide a photoreceptor for electrophotography which has a low residual potential in an initial stage, is inhibited from increasing in residual potential, is prevented from decreasing in charge potential, and undergoes little fatigue deterioration even upon repeated use. The invention relates to a photoreceptor for electrophotography which has a photosensitive layer containing a cyclic phenol sulfide represented by the following general formula (1): and one or more charge-transporting agents each having an arylamino group in the molecule, and which has excellent durability.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: August 21, 2012
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Makoto Koike, Katsumi Abe, Atsushi Takesue
  • Publication number: 20120208117
    Abstract: [Problems] To provide a novel compound which has a high carrier mobility and is useful as a charge-transporting agent that is not only capable of stably forming a photosensitive layer without precipitating crystals or forming pinholes at the time of forming the photosensitive layer but is also capable of forming an organic photosensitive material for electrophotography that has a high sensitivity and a low residual potential. [Means for Solution] A diphenylnaphthylamine derivative represented by the following general formula (1), wherein R1 to R3 are alkyl groups, k is an integer of 0 to 3, j is an integer of 0 to 4, l is an integer of 0 to 6, and X1 and X2 are hydrocarbon groups having at least one ethylenically unsaturated bond.
    Type: Application
    Filed: November 4, 2010
    Publication date: August 16, 2012
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Shigetaka Numazawa, Katsumi Abe, Makoto Koike, Kiyotaka Ihara
  • Patent number: 8243055
    Abstract: A light-emitting display device includes multiple pixels, with each pixel including a light-emitting element and a drive circuit for supplying the current to the light-emitting element based on a control voltage supplied from a data line. In a light-emitting period, one end of a capacitor element is connected with a source terminal by a second switch element, and the drive circuit supplies a current to the light-emitting element.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: August 14, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsumi Abe
  • Patent number: 8243539
    Abstract: When bit lines or sense amplifiers are checked whether they are defective during a test performed to check whether the bit lines are defectively open, an electrical current supplied from one sense amplifier is detected by another sense amplifier. Thus, if plural bit lines are defectively open, they can be detected simultaneously. Consequently, the test time can be shortened greatly.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: August 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Takizawa, Shoichi Ozaki, Katsumi Abe