Patents by Inventor Masayoshi Nakayama

Masayoshi Nakayama 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).

  • Patent number: 11062772
    Abstract: A variable resistance non-volatile memory device includes a memory cell array including memory cells, a write circuit, and a control circuit. Each memory cell includes a memory element that is a non-volatile and variable-resistance memory element, and a cell transistor. The write circuit includes a source line driver circuit connected to the cell transistor and a bit line driver circuit connected to the memory element. When performing a write operation of changing the memory element to a low resistance state, the control circuit performs control for allowing current having a first current value to flow through the memory element, and subsequently performs control for allowing current having a second current value to flow through the memory element. The second current value is greater than the largest value of overshoot current flowing through the memory element after the start of the changing of the memory element to the low resistance state.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: July 13, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Reiji Mochida, Kazuyuki Kouno, Takashi Ono, Masayoshi Nakayama, Yuriko Hayata
  • Publication number: 20210161162
    Abstract: [Problem] To provide: a film which is for aging meat and which is relatively easy to treat and allows meat to be aged more safely and effectively; and a film which is for preserving meat and can effectively suppress the deterioration of color or the like of fresh meat. [Solution] The present invention relates to a film for preserving meat, the film being characterized by: (1) including a hydrogen generating layer containing hydrogen generating particles which can generate a molecular hydrogen upon reacting with water; and (2) using the film in a state in which the hydrogen generating layer is directly contacted with the surface of the meat.
    Type: Application
    Filed: May 27, 2019
    Publication date: June 3, 2021
    Applicant: Toyo Aluminium Kabushiki Kaisha
    Inventors: Keisuke Iwasaki, Tetsuya Matsui, Hiroshi Izumida, Masakazu Uematsu, Masayoshi Nakayama
  • Publication number: 20210065795
    Abstract: A variable resistance non-volatile memory device includes a memory cell array including memory cells, a write circuit, and a control circuit. Each memory cell includes a memory element that is a non-volatile and variable-resistance memory element, and a cell transistor. The write circuit includes a source line driver circuit connected to the cell transistor and a bit line driver circuit connected to the memory element. When performing a write operation of changing the memory element to a low resistance state, the control circuit performs control for allowing current having a first current value to flow through the memory element, and subsequently performs control for allowing current having a second current value to flow through the memory element. The second current value is greater than the largest value of overshoot current flowing through the memory element after the start of the changing of the memory element to the low resistance state.
    Type: Application
    Filed: December 5, 2018
    Publication date: March 4, 2021
    Inventors: Reiji MOCHIDA, Kazuyuki KOUNO, Takashi ONO, Masayoshi NAKAYAMA, Yuriko HAYATA
  • Publication number: 20200325486
    Abstract: The purpose of the present invention is to provide a breeding method for a plant having a blue flower color with a simpler blue color development controlling technique, without requiring complex mechanisms for blue color development that have been previously presented and techniques reproducing such mechanisms. Delphinidin-based anthocyanins, in which the both 3? and 5?-positions of the anthocyanin B-ring have been glycosylated, and flavone glycosides or flavonol glycosides as copigment are made to coexist in the cells of flower organ such as petals.
    Type: Application
    Filed: March 13, 2017
    Publication date: October 15, 2020
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Naonobu NODA, Masayoshi NAKAYAMA, Mitsuru DOUZONO, Satoshi HONGO, Ryutaro AIDA, Yukihisa KATSUMOTO
  • Publication number: 20200202925
    Abstract: Connection weight coefficients to be used in a neural network computation are stored in a memory array. A word line drive circuit drives a word line corresponding to input data of a neural network. A column selection circuit connects to a computation circuit bit lines to which a connection weight coefficient to be computed is connected. The computation circuit determines the sum of cell currents flowing in the bit lines. A result of the determination made by the computation circuit is stored in an output holding circuit, and is set as an input of a neural network in the next layer, to the word line drive circuit. A control circuit instructs the word line drive circuit and the column selection circuit to select the word line and the bit line to be used in the neural network computation, based on information held in a network configuration information holding circuit.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Inventors: Yuriko HAYATA, Kazuyuki KOUNO, Masayoshi NAKAYAMA, Reiji MOCHIDA, Takashi ONO, Hitoshi SUWA
  • Publication number: 20200202203
    Abstract: A neural network computation circuit includes in-area multiple-word line selection circuits that are provided in one-to-one correspondence to a plurality of word line areas into which a plurality of word lines included in a memory array are logically divided. Each of the in-area multiple-word line selection circuits sets one or more word lines in a selected state or a non-selected state, and includes a first latch and a second latch provided for each word line.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Inventors: Masayoshi NAKAYAMA, Kazuyuki KOUNO, Yuriko HAYATA, Takashi ONO, Reiji MOCHIDA
  • Publication number: 20200202207
    Abstract: A neural network computation circuit that outputs output data according to a result of a multiply-accumulate operation between input data and connection weight coefficients, the neural network computation circuit includes computation units in each of which a memory element and a transistor are connected in series between data lines, a memory element and a transistor are connected in series between data lines, and gates of the transistors are connected to word lines. The connection weight coefficients are stored into the memory elements. A word line selection circuit places the word lines in a selection state or a non-selection state according to the input data. A determination circuit determines current values flowing in data lines to output output data. A current application circuit has a function of adjusting current values flowing in data lines, and adjusts connection weight coefficients without rewriting the memory elements.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Inventors: Reiji MOCHIDA, Kazuyuki KOUNO, Yuriko HAYATA, Takashi ONO, Masayoshi NAKAYAMA
  • Publication number: 20200202204
    Abstract: A neural network computation circuit that outputs output data according to a result of a multiply-accumulate operation between input data and connection weight coefficients, the neural network computation circuit includes computation units in each of which a non-volatile semiconductor memory element and a cell transistor are connected in series between data lines, a non-volatile semiconductor memory element and a cell transistor are connected in series between data lines, and gates of the transistors are connected to word lines. The connection weight coefficients are stored into the non-volatile semiconductor memory elements. A word line selection circuit places the word lines in a selection state or a non-selection state according to the input data. A determination circuit determines current values flowing in data lines to output output data.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Inventors: Kazuyuki KOUNO, Takashi ONO, Masayoshi NAKAYAMA, Reiji MOCHIDA, Yuriko HAYATA
  • Patent number: 10599081
    Abstract: An image forming apparatus includes a latent image bearer to bear a latent image, a potential sensor having a vibrator driven by a drive frequency to detect a surface potential of the latent image bearer, a developer bearer to bear developer that develops the latent image on the latent image bearer, and a power supply to apply a superimposed voltage obtained by superimposing an alternating voltage on a direct current voltage on the developer bearer. The frequency of the alternating voltage is not a multiple of the drive frequency and is a value obtained by adding a predetermined value to a multiple of the driving frequency.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: March 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Masashi Tachi, Takuma Higa, Masayoshi Nakayama, Masaki Sukesako, Tomohide Takenaka, Yuichi Aizawa, Kazuaki Kamihara, Keita Sone
  • Patent number: 10241462
    Abstract: An electrophotographic image forming apparatus includes a latent image bearer to rotate and bear a latent image, a charging device to charge the a latent image bearer, a developing device to develop the latent image with developer including toner and use a developing voltage including an AC component, and a lubricant applicator to apply lubricant onto a surface of the latent image bearer. An amount of the lubricant applied by the lubricant applicator onto the latent image bearer per centimeter in an axial direction of the latent image bearer is equal to or greater than 0.845 mg for a running distance of 1.0 kilometer of the latent image bearer, and a difference between a largest value and a smallest value of the developing voltage is in a range of 200 V to 400 V.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayoshi Nakayama, Takuma Higa, Masaki Sukesako, Masashi Tachi, Kazuaki Kamihara, Yuichi Aizawa, Tomohide Takenaka, Kohei Matsumoto
  • Publication number: 20190064719
    Abstract: An image forming apparatus includes a latent image bearer to bear a latent image, a potential sensor having a vibrator driven by a drive frequency to detect a surface potential of the latent image bearer, a developer bearer to bear developer that develops the latent image on the latent image bearer, and a power supply to apply a superimposed voltage obtained by superimposing an alternating voltage on a direct current voltage on the developer bearer. The frequency of the alternating voltage is not a multiple of the drive frequency and is a value obtained by adding a predetermined value to a multiple of the driving frequency.
    Type: Application
    Filed: August 14, 2018
    Publication date: February 28, 2019
    Inventors: Masashi TACHI, Takuma Higa, Masayoshi Nakayama, Masaki Sukesako, Tomohide Takenaka, Yuichi Aizawa, Kazuaki Kamihara, Keita Sone
  • Patent number: 10210930
    Abstract: A nonvolatile semiconductor storage apparatus is provided. To a data node and a reference node, a first transistor and a second transistor are respectively connected. In a data state determining operation, in the case where voltage is applied to the data node and reference node, the first and second transistors operate as precharge transistors in a first operation mode, and operate as mirror transistors in a second operation mode. The first and second operation modes are switched.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 19, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayoshi Nakayama, Yasuo Murakuki, Takafumi Maruyama
  • Publication number: 20180143581
    Abstract: An electrophotographic image forming apparatus includes a latent image bearer to rotate and bear a latent image, a charging device to charge the a latent image bearer, a developing device to develop the latent image with developer including toner and use a developing voltage including an AC component, and a lubricant applicator to apply lubricant onto a surface of the latent image bearer. An amount of the lubricant applied by the lubricant applicator onto the latent image bearer per centimeter in an axial direction of the latent image bearer is equal to or greater than 0.845 mg for a running distance of 1.0 kilometer of the latent image bearer, and a difference between a largest value and a smallest value of the developing voltage is in a range of 200 V to 400 V.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 24, 2018
    Inventors: Masayoshi NAKAYAMA, Takuma HIGA, Masaki SUKESAKO, Masashi TACHI, Kazuaki KAMIHARA, Yuichi AIZAWA, Tomohide TAKENAKA, Kohei MATSUMOTO
  • Patent number: 9747979
    Abstract: A memory array includes a plurality of memory cells arranged in a matrix, each memory cell including a cell transistor and a variable resistance element connected to an end of the cell transistor, and a cell transistor performance measuring cell including a MOS transistor. The cell transistor performance measuring cell is used to stabilize resistance values in a low resistance state and a high resistance state of the variable resistance element irrespective of variations in the cell transistor and thereby improve read characteristics and reliability characteristics of a nonvolatile semiconductor storage device.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: August 29, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayoshi Nakayama, Kazuyuki Kouno, Reiji Mochida, Keita Takahashi
  • Patent number: 9720355
    Abstract: An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: August 1, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Hirokazu Ishii, Toshitaka Yamaguchi, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Yuuji Wada, Kazuki Yogosawa, Shinya Tanaka, Masayoshi Nakayama
  • Patent number: 9696654
    Abstract: An image forming apparatus includes an image bearer, an image forming device, a toner concentration detector, a toner supply device, an image density detector, and a controller including a memory device. At a predetermined timing before image formation is started, the controller adjusts a developing potential to adjust an image density of a detection toner image on the image bearer and drives the toner supply device or the developing device to adjust a toner concentration in the developing device. After the image formation is started, the controller drives the toner supply device to adjust the toner concentration, and, in a predetermined sheet interval, adjusts the target concentration based on the image density of the detection toner image formed in a non-image area of the image bearer. When the toner concentration is higher than the target concentration plus a threshold, the controller suspends image formation and readjusts the developing potential.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: July 4, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayoshi Nakayama, Takuma Higa, Hiroyuki Kunii, Masaki Sukesako, Kazuaki Kamihara, Yuichi Aizawa, Masahiro Katoh, Kohei Matsumoto
  • Publication number: 20170003630
    Abstract: An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 5, 2017
    Inventors: Tatsuya OHSUGI, Kenji SUGIURA, Jyunya SAKURABA, Hirokazu ISHII, Toshitaka YAMAGUCHI, Hiroyoshi HAGA, Naohiro KUMAGAI, Seiichi KOGURE, Junpei FUJITA, Yuuji WADA, Kazuki YOGOSAWA, Shinya TANAKA, Masayoshi NAKAYAMA
  • Publication number: 20160372191
    Abstract: A nonvolatile semiconductor storage apparatus is provided. To a data node and a reference node, a first transistor and a second transistor are respectively connected. In a data state determining operation, in the case where voltage is applied to the data node and reference node, the first and second transistors operate as precharge transistors in a first operation mode, and operate as mirror transistors in a second operation mode. The first and second operation modes are switched.
    Type: Application
    Filed: July 25, 2016
    Publication date: December 22, 2016
    Inventors: MASAYOSHI NAKAYAMA, YASUO MURAKUKI, TAKAFUMI MARUYAMA
  • Patent number: 9500978
    Abstract: An image forming apparatus includes a first electric charging unit having an electric discharge wire to uniformly electrify a surface of the electrostatic latent image bearer, a second electric charging unit having a second electric discharge wire to execute a pre-electric charge removal electric charging process by electrifying the surface of the electrostatic latent image bearer subsequent to a transfer process to transfer a toner image, and a first electric charge removing device to diselectrify the surface of the electrostatic latent image bearer by irradiating it with electric charge removing light subsequent to the pre-electric charge removal electric charging process. The first electric charge removing device is disposed within an electric discharge region of the second electric discharge wire on a downstream side of an extreme upstream edge of the electric discharge region of the second electric discharge wire in a rotational direction of the electrostatic latent image bearer.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 22, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masayoshi Nakayama, Takuma Higa, Hiroyuki Kunil, Masaki Sukesako, Kazuaki Kamihara, Masakazu Terao, Yuichi Aizawa, Masahiro Katoh, Kohei Matsumoto, Toshihiro Sugiyama
  • Patent number: 9488931
    Abstract: An image forming apparatus includes a latent image bearer; a developing device containing two-component developer and including a developer bearer, a development voltage source, and a toner concentration detector; a toner supply device to supply toner to the developing device; a transfer device; and a controller to keep a toner concentration in the developer in the developing device at a target toner concentration during image formation. The controller executes forced toner consumption in which the developing device supplies the toner to the latent image bearer the toner at a predetermined forced toner consumption timing, while inhibiting the toner supply device from supplying toner. When the toner concentration falls to a prescribed toner density lower than the target toner concentration, the controller completes the forced toner consumption and executes a post-consumption toner supply operation.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: November 8, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Makoto Yasuda, Jun Hitosugi, Takamasa Ozeki, Mutsuki Morinaga, Emiko Shiraishi, Wakana Itoh, Hitoshi Yamamoto, Takatsugu Komori, Kunio Hasegawa, Tadashi Kasai, Kazuaki Kamihara, Kazumi Kobayashi, Hiroyuki Kunii, Masaki Sukesako, Yuichi Aizawa, Masakazu Terao, Masayoshi Nakayama, Takuma Higa, Masahiro Katoh, Kohei Matsumoto