Patents by Inventor Shigeki Makino
Shigeki Makino 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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Patent number: 11843101Abstract: Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.Type: GrantFiled: September 27, 2021Date of Patent: December 12, 2023Assignee: Vehicle Energy Japan Inc.Inventors: Masanari Oda, Hirofumi Takahashi, Shigeki Makino, Wataru Sato, Hitoshi Nishimori
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Publication number: 20230204675Abstract: A method for diagnosing a battery pack having a configuration in which a plurality of cells are connected in series uses a system for obtaining detected data including the current and temperature of the battery pack and the voltage of each cell. An electric charge capacity and a state of charge (SOC) of each cell is calculated using the current and the temperature, the voltage of each cell, an open circuit voltage (OCV)-SOC function, and an OCV-resistance table. An amount of unbalance, which is an estimated value of the SOC, and the resistance for each cell when the battery pack is fully charged is calculated; and the energy capacity of the battery pack using the electric charge capacity, the amount of unbalance, and the resistances are calculated. As a result, the energy capacity of the battery pack can be calculated accurately, even in an unbalanced state.Type: ApplicationFiled: July 20, 2021Publication date: June 29, 2023Inventors: Takeshi INOUE, Shigeki HIRASAWA, Tetsuya ISHIMARU, Kohei HONKURA, Shigeki MAKINO, Jun KAWAJI
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Patent number: 11346890Abstract: The life of a secondary battery has not been able to be prolonged due to deterioration of the secondary battery. In one step, whether a difference between an average value of a negative electrode capacity deviations calculated in a different step and a negative electrode capacity deviation calculated in another step is larger than a predetermined value is determined. In a case where the average value of the measured negative electrode capacity deviations is larger than the ideal negative electrode capacity deviation, and deterioration of the negative electrode capacity deviation is proceeding, a secondary battery is controlled to operate at a high voltage in a further step. With the control, the deterioration of the negative electrode capacity deviation is suppressed and the life of the secondary battery is prolonged.Type: GrantFiled: July 31, 2017Date of Patent: May 31, 2022Assignee: Vehicle Energy Japan Inc.Inventors: Masanari Oda, Shuichi Suzuki, Shigeki Makino, Takenori Ishizu, Ryohhei Nakao
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Publication number: 20220013828Abstract: Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.Type: ApplicationFiled: September 27, 2021Publication date: January 13, 2022Inventors: Masanari Oda, Hirofumi Takahashi, Shigeki Makino, Wataru Sato, Hitoshi Nishimori
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Publication number: 20220013829Abstract: Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.Type: ApplicationFiled: September 27, 2021Publication date: January 13, 2022Inventors: Masanari ODA, Hirofumi Takahashi, Shigeki Makino, Wataru Sato, Hitoshi Nishimori
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Patent number: 11133541Abstract: Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.Type: GrantFiled: March 5, 2018Date of Patent: September 28, 2021Assignee: Vehicle Energy Japan Inc.Inventors: Masanari Oda, Hirofumi Takahashi, Shigeki Makino, Wataru Sato, Hitoshi Nishimori
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Publication number: 20210286014Abstract: The life of a secondary battery has not been able to be prolonged due to deterioration of the secondary battery. In one step, whether a difference between an average value of a negative electrode capacity deviations calculated in a different step and a negative electrode capacity deviation calculated in another step is larger than a predetermined value is determined. In a case where the average value of the measured negative electrode capacity deviations is larger than the ideal negative electrode capacity deviation, and deterioration of the negative electrode capacity deviation is proceeding, a secondary battery is controlled to operate at a high voltage in a further step. With the control, the deterioration of the negative electrode capacity deviation is suppressed and the life of the secondary battery is prolonged.Type: ApplicationFiled: July 31, 2017Publication date: September 16, 2021Inventors: Masanari ODA, Shuichi SUZUKI, Shigeki MAKINO, Takenori ISHIZU, Ryohhei NAKAO
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Publication number: 20190207279Abstract: Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.Type: ApplicationFiled: March 5, 2018Publication date: July 4, 2019Inventors: Masanari ODA, Hirofumi TAKAHASHI, Shigeki MAKINO, Wataru SATO, Hitoshi NISHIMORI
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Patent number: 9110315Abstract: An optical device includes a ridge-like optical waveguide portion, a mesa protector portion that is arranged in parallel to the optical waveguide portion, a resin portion that covers upper parts of the mesa protector portion and is disposed at both sides of the mesa protector portion, an electrode that is disposed on the optical waveguide portion, an electrode pad that is disposed on the resin portion located at an opposite side to the optical waveguide portion with respect to the mesa protector portion, and a connection portion that is disposed on the resin portion and electrically connects the electrode to the electrode pad.Type: GrantFiled: June 5, 2012Date of Patent: August 18, 2015Assignee: Oclaro Japan, Inc.Inventors: Akira Nakanishi, Hideo Arimoto, Hiroaki Hayashi, Shigeki Makino, Kazunori Shinoda
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Patent number: 8965153Abstract: A core of an optical waveguide and a core of a waveguide type optical device are adjacently disposed, and a layer is continuously formed at one end of the core of the waveguide type optical device, wherein an effective refractive index of the layer decreases toward a long axis direction of the optical waveguide stripe.Type: GrantFiled: December 5, 2007Date of Patent: February 24, 2015Assignee: Hitachi Ltd.Inventors: Makoto Takahashi, Hideo Arimoto, Kazuhiko Hosomi, Toshihiko Fukamachi, Shigeki Makino, Yasunobu Matsuoka, Toshiki Sugawara
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Patent number: 8902947Abstract: An optical module providing higher reliability during high-speed light modulation and a lower bit error rate when built into a transmitter (transceiver). An optical module contains a taper mirror for surface emission of output light, an optical modulator device, and an optical modulation drive circuit, and the optical modulator device and the optical modulation drive circuit are mounted at positions so as to enclose the taper mirror.Type: GrantFiled: January 9, 2012Date of Patent: December 2, 2014Assignee: Hitachi, Ltd.Inventors: Shigeki Makino, Yasunobu Matsuoka, Kenji Kogo, Toshiki Sugawara, Tatemi Ido
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Patent number: 8774571Abstract: An optical device includes a substrate and a first optical waveguide including a mesa. The mesa includes a first lower clad layer portion, a first core layer portion, and a first upper clad layer portion. The first lower clad layer portion, the first core layer portion, and the first upper clad layer portion are disposed in this order from the substrate side. The optical device also includes a first etch stop layer configured to stop etching when the first optical waveguide is formed. The first etch stop layer being laminated over the substrate. The first optical waveguide is laminated on the first etch stop layer.Type: GrantFiled: August 21, 2012Date of Patent: July 8, 2014Assignee: Oclaro Japan, Inc.Inventors: Kazunori Shinoda, Shigeki Makino, Hideo Arimoto
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Publication number: 20130322478Abstract: Beams of light having wavelengths different from each other are generated in a plurality of light generation portions, the beams of light each generated in the plurality of light generation portions are reflected by a monolithic integrated mirror and are incident to a condenser lens, and emission positions on the condenser lens of the beams of light each generated in the plurality of light generation portions deviate from a central position of the condenser lens by a predetermined amount.Type: ApplicationFiled: May 29, 2013Publication date: December 5, 2013Inventors: Koichiro ADACHI, Hideo ARIMOTO, Shigeki MAKINO, Toshiki SUGAWARA
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Publication number: 20130051725Abstract: An optical device includes a substrate and a first optical waveguide including a mesa. The mesa includes a first lower clad layer portion, a first core layer portion, and a first upper clad layer portion. The first lower clad layer portion, the first core layer portion, and the first upper clad layer portion are disposed in this order from the substrate side. The optical device also includes a first etch stop layer configured to stop etching when the first optical waveguide is formed. The first etch stop layer being laminated over the substrate. The first optical waveguide is laminated on the first etch stop layer.Type: ApplicationFiled: August 21, 2012Publication date: February 28, 2013Applicant: OCLARO JAPAN, INC.Inventors: Kazunori SHINODA, Shigeki MAKINO, Hideo ARIMOTO
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Publication number: 20120328229Abstract: There is provided an optical module including photonic devices set in array, prepared by integrating a plurality of photonic devices with each other in such a state as arranged in such a array as to enable light beams to output in the common direction. The plural photonic devices each include a first electrode, and a second electrode, arranged in the same direction as the plural photonic devices are arranged, and the first and second electrodes of the photonic devices adjacent to each other are disposed such that respective electrode layouts are a mirror image of each other.Type: ApplicationFiled: June 7, 2012Publication date: December 27, 2012Applicant: Hitachi, Ltd.Inventors: Kenji Kogo, Yasunobu Matsuoka, Shigeki Makino
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Publication number: 20120314725Abstract: An optical device includes a ridge-like optical waveguide portion, a mesa protector portion that is arranged in parallel to the optical waveguide portion, a resin portion that covers upper parts of the mesa protector portion and is disposed at both sides of the mesa protector portion, an electrode that is disposed on the optical waveguide portion, an electrode pad that is disposed on the resin portion located at an opposite side to the optical waveguide portion with respect to the mesa protector portion, and a connection portion that is disposed on the resin portion and electrically connects the electrode to the electrode pad.Type: ApplicationFiled: June 5, 2012Publication date: December 13, 2012Applicant: OPNEXT JAPAN, INCInventors: Akira NAKANISHI, Hideo ARIMOTO, Hiroaki HAYASHI, Shigeki MAKINO, Kazunori SHINODA
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Publication number: 20120250711Abstract: An optical module providing higher reliability during high-speed light modulation and a lower bit error rate when built into a transmitter (transceiver). An optical module contains a taper mirror for surface emission of output light, an optical modulator device, and an optical modulation drive circuit, and the optical modulator device and the optical modulation drive circuit are mounted at positions so as to enclose the taper mirror.Type: ApplicationFiled: January 9, 2012Publication date: October 4, 2012Applicant: Hitachi, Ltd.Inventors: Shigeki MAKINO, Yasunobu MATSUOKA, Kenji KOGO, Toshiki SUGAWARA, Tatemi IDO
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Patent number: 8068526Abstract: A purpose is to provide a semiconductor optical device having good characteristics to be formed on a semi-insulating InP substrate. Firstly, a semi-insulating substrate including a Ru—InP layer on a conductive substrate is used. Secondly, a semi-insulating substrate including a Ru—InP layer on a Ru—InP substrate or an Fe—InP substrate is used and semiconductor layers of an n-type semiconductor layer, a quantum-well layer, and a p-type semiconductor layer are stacked in this order.Type: GrantFiled: December 1, 2009Date of Patent: November 29, 2011Assignee: Opnext Japan, Inc.Inventors: Shigeki Makino, Takeshi Kitatani, Tomonobu Tsuchiya
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Publication number: 20100328753Abstract: An integrated semiconductor optical device and an optical module capable of the high-speed and large-capacity optical transmission are provided. In an integrated semiconductor optical device in which a plurality of optical devices buried with semi-insulating semiconductor materials are integrated on the same semiconductor substrate and an optical module using the integrated semiconductor optical device, configurations (material and electrical characteristics) of the buried layers are made different for each of the optical devices.Type: ApplicationFiled: June 24, 2010Publication date: December 30, 2010Inventors: Hiroaki Hayashi, Shigeki Makino, Takeshi Kitatani, Shigehisa Tanaka
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Patent number: 7809038Abstract: In a conventional EA/DFB laser, since the temperature dependence of the operation wavelength of the EA portion is substantially different from that of the DFB portion, the temperature range over which a stable operation is possible is small. In the case of using the EA/DFB laser as a light emission device, an uncooled operation is not possible. An EA/DFB laser which does not require a temperature control mechanism is proposed. A quantum well structure in which a well layer made of any one of InGaAlAs, InGaAsP, and InGaAs, and a barrier layer made of either one of InGaAlAs or InAlAs is used for an optical absorption layer of an EA modulator. By properly determining detuning at a temperature of 25° C. and a composition wavelength of the barrier layer in the quantum well structure used for the optical absorption layer, it can be realized to suppress the insertion loss, maintain the extinction ratio, and reduce chirping simultaneously over a wide temperature range from ?5° C. to 80° C.Type: GrantFiled: July 7, 2006Date of Patent: October 5, 2010Assignee: Opnext Japan, Inc.Inventor: Shigeki Makino