Patents by Inventor Masami Takai

Masami Takai 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: 20230355967
    Abstract: A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.
    Type: Application
    Filed: July 6, 2023
    Publication date: November 9, 2023
    Applicants: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Kazuhito KISHI, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
  • Patent number: 11730956
    Abstract: A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 22, 2023
    Assignees: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Kazuhito Kishi, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
  • Publication number: 20230028286
    Abstract: (Object) To reduce the power consumption. (Means of Achieving the object) A sensor element according to an aspect of the present invention is used in a sensor system, the sensor system including at least one of a detector and a calculator, and a power source, the sensor element including a charge generation element configured to generate a charge in response to an external stimulus; and a signal converter configured to convert the charge into a predetermined output signal, wherein the signal converter is formed of one or more passive elements only, and an initial driving power for the signal converter is supplied from the power source.
    Type: Application
    Filed: January 20, 2021
    Publication date: January 26, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Masami TAKAI, Kazuhito KISHI, Mizuki OTAGIRI, Atsushi OHSHIMA, Takahiro IMAI, Junichiro NATORI, Tsuneaki KONDOH, Tomoaki SUGAWARA
  • Patent number: 11545700
    Abstract: A power storage system includes a power storage element; and a voltage detecting unit configured to detect an output voltage of the power storage element. The power storage element and the voltage detecting unit are formed by integrally forming structural materials of the power storage element and the voltage detecting unit on the same base material, without any point bonding portions formed by solder mounting.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: January 3, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiromichi Kuriyama, Masami Takai, Satoshi Nakajima, Eiko Suzuki, Toru Ushirogochi
  • Patent number: 11493392
    Abstract: A sensor sheet includes unit sensor sheets configured to detect a physical property value at multiple points on a sensor layer, each unit sensor sheet including a first substrate, and an electrode layer and the sensor layer sequentially formed on one side of the first substrate; and a wiring substrate to which the unit sensor sheets are configured to be coupled, the wiring substrate including a second substrate, and a plurality of wirings provided on one side of the second substrate. One side of the wiring substrate and one side of each unit sensor sheet are facing each other. A conductive bonding member configured to electrically couple each unit sensor sheet and the wiring substrate with each other, is included between the electrode layer of each unit sensor sheet and at least one of the wirings of the wiring substrate.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 8, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Kondoh, Kazuhito Kishi, Atsushi Ohshima, Masami Takai
  • Publication number: 20220294237
    Abstract: A power storage apparatus includes a power storage unit including a plurality of power storage devices (C1, C2) storing electric power, a series-and-parallel switching unit configured to switch connection of the plurality of power storage devices into a series connection or a parallel connection, and a series-and-parallel switching control unit configured to control the series-and-parallel switching unit, wherein the series-and-parallel switching control unit controls timing of the switching with hysteresis.
    Type: Application
    Filed: August 12, 2020
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Masami TAKAI, Kazuhito KISHI, Atsushi OHSHIMA, Takahiro IMAI
  • Publication number: 20210102851
    Abstract: A sensor sheet includes unit sensor sheets configured to detect a physical property value at multiple points on a sensor layer, each unit sensor sheet including a first substrate, and an electrode layer and the sensor layer sequentially formed on one side of the first substrate; and a wiring substrate to which the unit sensor sheets are configured to be coupled, the wiring substrate including a second substrate, and a plurality of wirings provided on one side of the second substrate. One side of the wiring substrate and one side of each unit sensor sheet are facing each other. A conductive bonding member configured to electrically couple each unit sensor sheet and the wiring substrate with each other, is included between the electrode layer of each unit sensor sheet and at least one of the wirings of the wiring substrate.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 8, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Hitoshi KONDOH, Kazuhito KISHI, Atsushi OHSHIMA, Masami TAKAI
  • Publication number: 20200243915
    Abstract: A power storage system includes a power storage element; and a voltage detecting unit configured to detect an output voltage of the power storage element. The power storage element and the voltage detecting unit are formed by integrally forming structural materials of the power storage element and the voltage detecting unit on the same base material, without any point bonding portions formed by solder mounting.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiromichi Kuriyama, Masami Takai, Satoshi Nakajima, Eiko Suzuki, Toru Ushirogochi
  • Publication number: 20190358448
    Abstract: A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 28, 2019
    Applicants: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Kazuhito Kishi, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
  • Patent number: 10298027
    Abstract: The method is disclosed of controlling a switch circuit which includes a first switching unit configured to switch between energy accumulation and energy release in a coil, and second switching units configured to connect or disconnect a plurality of corresponding storage batteries with the coil. The method comprises a first step of performing an operation to switch on the first switching unit and to switch off the second switching units; and a second step of performing an operation to switch off the first switching unit and to switch on only one of the second switching units.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: May 21, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masami Takai, Akira Nakamura
  • Patent number: 9780589
    Abstract: An electrical equipment is supplied with electric power from one of an electric power supply system and a secondary battery. The electrical equipment includes a switch circuit and a module. The switching circuit switches a power supply source for supplying electric power to the electrical equipment between the electric power supply system and the secondary battery. The module includes a processor to execute a program to perform a controlling process including a process of controlling the switch circuit to selectively connect the electrical equipment to one of the electric power supply system and the secondary battery according to a control signal supplied from an external device.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 3, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaaki Yoshida, Masami Takai
  • Patent number: 9748785
    Abstract: A storage status adjusting circuit includes a first switching unit configured to switch between energy accumulation in a first coil and energy release from the first coil to any one of electric storage devices in a first assembled electric storage device having a plurality of the electric storage devices, a second switching unit configured to switch between energy accumulation in a second coil and energy release from the second coil to any one of the electric storage devices in a second assembled electric storage device having a plurality of the electric storage devices, and a changing unit configured to change a potential difference between both ends of the first coil and a potential difference between both ends of the second coil based on storage statuses of the first assembled electric storage device and the second assembled electric storage device, when energy is accumulated in the first coil and the second coil.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: August 29, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masami Takai
  • Patent number: 9742205
    Abstract: A storage status adjusting circuit includes: n (n is natural number greater than 2) switching units configured to switch between energy accumulation in respective n coils and energy release from the respective n coils to any one of component electric storage devices, which are respectively included in n assembled electric storage devices respectively including a plurality of the component electric storage devices; and n changing units configured to respectively change potential differences between both ends of the n coils; wherein the changing units change, based on the storage statuses of the n assembled electric storage devices, at least any one of the potential differences between both ends of the n coils, when accumulating energy in the n coils.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: August 22, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masami Takai
  • Patent number: 9641003
    Abstract: A method of controlling a switch circuit which includes n (n is a natural number greater than or equal to 3) switching units configured to respectively connect n storage batteries, which are connected in series, with n coils, wherein the n storage batteries have respective potential differences between opposite ends thereof, the method includes the step of: controlling the switching units corresponding to k (k is a natural number wherein 1<k<n) storage batteries, which are secondary batteries other than a secondary battery having the largest potential difference among the potential differences of the n storage batteries, to connect the k storage batteries with respective k coils.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 2, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masami Takai
  • Patent number: 9620962
    Abstract: A power supply device is connected to an external power supply and supplies electric power to a load. The power supply device includes a battery terminal that is used to connect a secondary battery, a superposition unit that superposes second electric power output from the secondary battery on first electric power supplied from the external power supply, and that outputs resultant electric power to the load; a power consumption amount retrieve unit that retrieves a power consumption amount of the load; and a controller that controls an amount of the second electric power to be output from the secondary battery, based on the power consumption amount.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: April 11, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaaki Yoshida, Masami Takai
  • Publication number: 20170063109
    Abstract: The method is disclosed of controlling a switch circuit which includes a first switching unit configured to switch between energy accumulation and energy release in a coil, and second switching units configured to connect or disconnect a plurality of corresponding storage batteries with the coil. The method comprises a first step of performing an operation to switch on the first switching unit and to switch off the second switching units; and a second step of performing an operation to switch off the first switching unit and to switch on only one of the second switching units.
    Type: Application
    Filed: February 25, 2015
    Publication date: March 2, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masami TAKAI, Akira NAKAMURA
  • Publication number: 20150357837
    Abstract: A battery charger for charging a battery includes a charger; an acquisition unit acquiring information of the battery; and a control unit setting a charging condition of the battery based on the information of the battery and controlling the charger.
    Type: Application
    Filed: December 23, 2013
    Publication date: December 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masami TAKAI, Masaaki YOSHIDA
  • Publication number: 20150263545
    Abstract: A storage status adjusting circuit includes: n (n is natural number greater than 2) switching units configured to switch between energy accumulation in respective n coils and energy release from the respective n coils to any one of component electric storage devices, which are respectively included in n assembled electric storage devices respectively including a plurality of the component electric storage devices; and n changing units configured to respectively change potential differences between both ends of the n coils; wherein the changing units change, based on the storage statuses of the n assembled electric storage devices, at least any one of the potential differences between both ends of the n coils, when accumulating energy in the n coils.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 17, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Masami TAKAI
  • Publication number: 20150256000
    Abstract: A method of controlling a switch circuit which includes n (n is a natural number greater than or equal to 3) switching units configured to respectively connect n storage batteries, which are connected in series, with n coils, wherein the n storage batteries have respective potential differences between opposite ends thereof, the method includes the step of: controlling the switching units corresponding to k (k is a natural number wherein 1<k<n) storage batteries, which are secondary batteries other than a secondary battery having the largest potential difference among the potential differences of the n storage batteries, to connect the k storage batteries with respective k coils.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Masami Takai
  • Publication number: 20150256020
    Abstract: A storage status adjusting circuit includes a first switching unit configured to switch between energy accumulation in a first coil and energy release from the first coil to any one of electric storage devices in a first assembled electric storage device having a plurality of the electric storage devices, a second switching unit configured to switch between energy accumulation in a second coil and energy release from the second coil to any one of the electric storage devices in a second assembled electric storage device having a plurality of the electric storage devices, and a changing unit configured to change a potential difference between both ends of the first coil and a potential difference between both ends of the second coil based on storage statuses of the first assembled electric storage device and the second assembled electric storage device, when energy is accumulated in the first coil and the second coil.
    Type: Application
    Filed: March 3, 2015
    Publication date: September 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Masami Takai