Patents by Inventor Shogo Hirota
Shogo Hirota 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: 20240010789Abstract: It is an object to provide P3HA in which impurities (in particular, residual protein) are reduced, at a high yield, from microbial cells containing P3HA. The above object is attained by a method for producing P3HA having a weight average molecular weight of 100,000 to 700,000, the method including: (a) a step of adjusting the pH of a culture solution including microbial cells containing P3HA to 8.0 to 12.0; (b) a step of adding an enzyme to the culture solution to perform an enzyme treatment; and (c) a step of adjusting the pH of the culture solution to 10.0 to 12.0.Type: ApplicationFiled: October 6, 2021Publication date: January 11, 2024Applicant: KANEKA CORPORATIONInventors: Shogo HIROTA, Tomoya NISHINAKA
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Patent number: 11742776Abstract: An inverter circuit includes a plurality of flying capacitors and converts a DC voltage supplied from a DC power supply into an AC voltage. A filter circuit approximates a waveform of an output voltage of the inverter circuit to a sinusoidal wave. An excess current protection circuit supplies a block signal for turning off a plurality of switching elements to the driving circuit when an excess current is detected. When at least one of an abnormal voltage in any of the plurality of flying capacitors and an abrupt change in an output voltage of the power converter occurs, voltages other than a positive voltage of the DC power supply, a negative voltage of the DC power supply, and a zero voltage are restricted from being output from the inverter circuit.Type: GrantFiled: February 21, 2020Date of Patent: August 29, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kenji Hanamura, Wataru Horio, Hiroyuki Fujii, Shogo Hirota
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Publication number: 20220380530Abstract: In one or more embodiments, the present invention relates to a method for producing a polyhydroxybutyrate-based resin. The method includes (a) disrupting or solubilizing microbial cells containing a polyhydroxybutyrate-based resin, and (b) separating the polyhydroxybutyrate-based resin from a composition obtained by the process (a). The process (a) and the process (b) use water with a calcium ion concentration (14.5 mg/L or less. The water used in the process (a) and the process (b) is preferably obtained by subjecting wastewater that is discharged from the production process of the polyhydroxybutyrate-based resin to microbial anaerobic and aerobic treatments, subsequently pre-filtration by a membrane bioreactor process, and further filtration with a calcium ion removal membrane This method provides the polyhydroxybutyrate-based resin with good color tone and high thermal stability.Type: ApplicationFiled: August 9, 2022Publication date: December 1, 2022Applicant: KANEKA CORPORATIONInventors: Asuka FUKUMOTO, Shogo HIROTA, Masaru HIRANO
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Publication number: 20220360182Abstract: For power transfer from a first DC part to a second DC part in a dual active bridge (DAB) converter by stepping up a voltage, the second bridge circuit 12 includes a period in which a secondary winding n2 of an insulated transformer TR1 and the second DC part conduct and a period in which ends of the secondary winding n2 of the insulated transformer TR1 are short-circuited in the second bridge circuit 12. A control circuit 13 fixes a phase difference between a first leg a the second leg, variably controls a simultaneous off period of a fifth switching element S5 and a sixth switching element S6, and variably controls a simultaneous off period of a seventh switching element S7 and an eighth switching element S8.Type: ApplicationFiled: June 22, 2020Publication date: November 10, 2022Inventors: Shogo HIROTA, Kenji HANAMURA, Takashi SHIRAKAWA
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Publication number: 20220321027Abstract: An inverter circuit includes a plurality of flying capacitors and converts a DC voltage supplied from a DC power supply into an AC voltage. A filter circuit approximates a waveform of an output voltage of the inverter circuit to a sinusoidal wave. An excess current protection circuit supplies a block signal for turning off a plurality of switching elements to the driving circuit when an excess current is detected. When at least one of an abnormal voltage in any of the plurality of flying capacitors and an abrupt change in an output voltage of the power converter occurs, voltages other than a positive voltage of the DC power supply, a negative voltage of the DC power supply, and a zero voltage are restricted from being output from the inverter circuit.Type: ApplicationFiled: February 21, 2020Publication date: October 6, 2022Inventors: Kenji HANAMURA, Wataru HORIO, Hiroyuki FUJII, Shogo HIROTA
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Publication number: 20220278625Abstract: For power transfer from a first DC part to a second DC part in a dual active bridge (DAB) converter by stepping down a voltage, a first bridge circuit includes a period in which the first DC part and a primary winding of an insulated transformer conduct and a period in which ends of a primary winding of the insulated transformer are short-circuited in the first bridge circuit. A second bridge circuit includes a rectification period. A control circuit variably controls a phase difference between a first leg a the second leg, variably controls a simultaneous off period of a fifth switching element and a sixth switching element, and variably controls a simultaneous off period of a seventh switching element and an eighth switching element.Type: ApplicationFiled: June 22, 2020Publication date: September 1, 2022Inventors: Shogo HIROTA, Kenji HANAMURA, Takashi SHIRAKAWA
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Publication number: 20220265714Abstract: The present disclosure includes a method of producing a cell population containing Chimeric Antigen Receptor (CAR)-expressing immune cells, comprising co-culturing CAR-expressing immune cells and cells expressing a target antigen of the CAR, wherein the CAR-expressing immune cells are cells into which a CAR gene has been introduced and the target antigen-expressing cells are normal blood cells that have been engineered to express the target antigen.Type: ApplicationFiled: July 30, 2020Publication date: August 25, 2022Applicants: SHINSHU UNIVERSITY, KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION, BrightPath Biotherapeutics Co., Ltd.Inventors: Yozo Nakazawa, Shigeki YAGYU, Miyuki TANAKA, Kayoko NAKAMURA, Masahiro OKADA, Makoto KONDO, Tomokuni SHIGEURA, Shogo HIROTA
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Publication number: 20060094821Abstract: Provided are an aromatic vinyl polymer resin composition capable of being molded into resin foam sheets having good surface smoothness and glossiness well balanced with the mechanical strength thereof even when the expansion ratio in molding is increased, and resin foam sheets and containers of the composition. The resin composition comprises (A) from 80 to 98% by mass of an aromatic vinyl polymer resin having a weight-average molecular weight measured through GPC of from 200,000 to 400,000, a ratio of weight-average molecular weight to number-average molecular weight ranging from 2.2 to 3.6, a number of branches of from 0.1 to 1.0 in one molecule having an absolute molecular weight of 1,190,000 measured through GPC-MALLS, and a melt flow rate of from 1.5 to 3.5 g/10 min, and (B) from 2 to 20% by mass of a styrene-diene block copolymer or its hydrogenate. This is molded into a resin foam sheet through extrusion foaming, and the sheet is thermoformed into containers.Type: ApplicationFiled: December 16, 2005Publication date: May 4, 2006Applicant: Idemitsu Kosan Co., Ltd.Inventors: Shogo Hirota, Ryozo Okumura, Makoto Wakabayashi
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Patent number: 7026396Abstract: Provided are an aromatic vinyl polymer resin composition capable of being molded into resin foam sheets having good surface smoothness and glossiness well balanced with the mechanical strength thereof even when the expansion ratio in molding is increased, and resin foam sheets and containers of the composition. The resin composition comprises (A) from 80 to 98% by mass of an aromatic vinyl polymer resin having a weight-average molecular weight measured through GPC of from 200,000 to 400,000, a ratio of weight-average molecular weight to number-average molecular weight ranging from 2.2 to 3.6, a number of branches of from 0.1 to 1.0 in one molecule having an absolute molecular weight of 1,190,000 measured through GPC-MALLS, and a melt flow rate of from 1.5 to 3.5 g/10 min, and (B) from 2 to 20% by mass of a styrene-diene block copolymer or its hydrogenate. This is molded into a resin foam sheet through extrusion foaming, and the sheet is thermoformed into containers.Type: GrantFiled: July 17, 2002Date of Patent: April 11, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Shogo Hirota, Ryozo Okumura, Makoto Wakabayashi
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Publication number: 20030022990Abstract: Provided are an aromatic vinyl polymer resin composition capable of being molded into resin foam sheets having good surface smoothness and glossiness well balanced with the mechanical strength thereof even when the expansion ratio in molding is increased, and resin foam sheets and containers of the composition. The resin composition comprises (A) from 80 to 98% by mass of an aromatic vinyl polymer resin having a weight-average molecular weight measured through GPC of from 200,000 to 400,000, a ratio of weight-average molecular weight to number-average molecular weight ranging from 2.2 to 3.6, a number of branches of from 0.1 to 1.0 in one molecule having an absolute molecular weight of 1,190,000 measured through GPC-MALLS, and a melt flow rate of from 1.5 to 3.5 g/10 min, and (B) from 2 to 20% by mass of a styrene-diene block copolymer or its hydrogenate. This is molded into a resin foam sheet through extrusion foaming, and the sheet is thermoformed into containers.Type: ApplicationFiled: July 17, 2002Publication date: January 30, 2003Applicant: IDEMITSU PETROCHEMICAL CO., LTD.Inventors: Shogo Hirota, Ryozo Okumura, Makoto Wakabayashi