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).
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Publication number: 20230355967Abstract: 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: ApplicationFiled: July 6, 2023Publication date: November 9, 2023Applicants: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Kazuhito KISHI, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
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Patent number: 11730956Abstract: 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: GrantFiled: May 20, 2019Date of Patent: August 22, 2023Assignees: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Kazuhito Kishi, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
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Publication number: 20230028286Abstract: (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: ApplicationFiled: January 20, 2021Publication date: January 26, 2023Applicant: Ricoh Company, Ltd.Inventors: Masami TAKAI, Kazuhito KISHI, Mizuki OTAGIRI, Atsushi OHSHIMA, Takahiro IMAI, Junichiro NATORI, Tsuneaki KONDOH, Tomoaki SUGAWARA
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Patent number: 11545700Abstract: 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: GrantFiled: January 23, 2020Date of Patent: January 3, 2023Assignee: Ricoh Company, Ltd.Inventors: Hiromichi Kuriyama, Masami Takai, Satoshi Nakajima, Eiko Suzuki, Toru Ushirogochi
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Patent number: 11493392Abstract: 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: GrantFiled: September 30, 2020Date of Patent: November 8, 2022Assignee: Ricoh Company, Ltd.Inventors: Hitoshi Kondoh, Kazuhito Kishi, Atsushi Ohshima, Masami Takai
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Publication number: 20220294237Abstract: 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: ApplicationFiled: August 12, 2020Publication date: September 15, 2022Applicant: Ricoh Company, Ltd.Inventors: Masami TAKAI, Kazuhito KISHI, Atsushi OHSHIMA, Takahiro IMAI
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Publication number: 20210102851Abstract: 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: ApplicationFiled: September 30, 2020Publication date: April 8, 2021Applicant: Ricoh Company, Ltd.Inventors: Hitoshi KONDOH, Kazuhito KISHI, Atsushi OHSHIMA, Masami TAKAI
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Publication number: 20200243915Abstract: 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: ApplicationFiled: January 23, 2020Publication date: July 30, 2020Applicant: Ricoh Company, Ltd.Inventors: Hiromichi Kuriyama, Masami Takai, Satoshi Nakajima, Eiko Suzuki, Toru Ushirogochi
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Publication number: 20190358448Abstract: 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: ApplicationFiled: May 20, 2019Publication date: November 28, 2019Applicants: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Kazuhito Kishi, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
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Patent number: 10298027Abstract: 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: GrantFiled: February 25, 2015Date of Patent: May 21, 2019Assignee: RICOH COMPANY, LTD.Inventors: Masami Takai, Akira Nakamura
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Patent number: 9780589Abstract: 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: GrantFiled: September 5, 2014Date of Patent: October 3, 2017Assignee: Ricoh Company, Ltd.Inventors: Masaaki Yoshida, Masami Takai
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Patent number: 9748785Abstract: 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: GrantFiled: March 3, 2015Date of Patent: August 29, 2017Assignee: RICOH COMPANY, LTD.Inventor: Masami Takai
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Patent number: 9742205Abstract: 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: GrantFiled: March 16, 2015Date of Patent: August 22, 2017Assignee: RICOH COMPANY, LTD.Inventor: Masami Takai
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Patent number: 9641003Abstract: 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: GrantFiled: March 4, 2015Date of Patent: May 2, 2017Assignee: RICOH COMPANY, LTD.Inventor: Masami Takai
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Patent number: 9620962Abstract: 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: GrantFiled: December 20, 2013Date of Patent: April 11, 2017Assignee: RICOH COMPANY, LTD.Inventors: Masaaki Yoshida, Masami Takai
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Publication number: 20170063109Abstract: 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: ApplicationFiled: February 25, 2015Publication date: March 2, 2017Applicant: RICOH COMPANY, LTD.Inventors: Masami TAKAI, Akira NAKAMURA
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Publication number: 20150357837Abstract: 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: ApplicationFiled: December 23, 2013Publication date: December 10, 2015Applicant: RICOH COMPANY, LTD.Inventors: Masami TAKAI, Masaaki YOSHIDA
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Publication number: 20150263545Abstract: 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: ApplicationFiled: March 16, 2015Publication date: September 17, 2015Applicant: RICOH COMPANY, LTD.Inventor: Masami TAKAI
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Publication number: 20150256000Abstract: 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: ApplicationFiled: March 4, 2015Publication date: September 10, 2015Applicant: RICOH COMPANY, LTD.Inventor: Masami Takai
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Publication number: 20150256020Abstract: 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: ApplicationFiled: March 3, 2015Publication date: September 10, 2015Applicant: RICOH COMPANY, LTD.Inventor: Masami Takai