Patents by Inventor Tsutomu Yoshida
Tsutomu Yoshida 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: 11378072Abstract: An air compressor includes: a motor; a compression mechanism that is driven by the motor and that is configured to generate compressed air; a tank that is configured to store the generated compressed air; a load acquisition part that is configured to acquire a load applied to the compression mechanism; and a control part that is configured to control a rotation of the motor. The control part is configured to perform control for changing a TN characteristic of the motor in response to the load of the compression mechanism acquired by the load acquisition part.Type: GrantFiled: April 10, 2020Date of Patent: July 5, 2022Assignee: MAX CO., LTD.Inventors: Shinichi Okubo, Tsutomu Yoshida
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Patent number: 11131301Abstract: An air compressor includes a tank unit that stores compressed air, a motor unit that generates compressed air to be stored in the tank unit, a pressure detection unit that detects a pressure value in the tank unit, and a control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value. The control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed.Type: GrantFiled: February 10, 2020Date of Patent: September 28, 2021Assignee: MAX CO., LTD.Inventors: Shinichi Ohkubo, Tsutomu Yoshida, Haruaki Akasaka
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Publication number: 20200325890Abstract: An air compressor includes: a motor; a compression mechanism that is driven by the motor and that is configured to generate compressed air; a tank that is configured to store the generated compressed air; a load acquisition part that is configured to acquire a load applied to the compression mechanism; and a control part that is configured to control a rotation of the motor. The control part is configured to perform control for changing a TN characteristic of the motor in response to the load of the compression mechanism acquired by the load acquisition part.Type: ApplicationFiled: April 10, 2020Publication date: October 15, 2020Applicant: MAX CO., LTD.Inventors: Shinichi OKUBO, Tsutomu YOSHIDA
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Patent number: 10793666Abstract: A polyisocyanate composition includes an isocyanurate derivative of xylylene diisocyanate, and a biuret derivative of aliphatic polyisocyanate.Type: GrantFiled: June 8, 2016Date of Patent: October 6, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Shirou Honma, Kazuyuki Fukuda, Hideaki Otsuka, Tsutomu Yoshida, Toshiaki Moriya, Tatsuya Nakashima
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Publication number: 20200173434Abstract: An air compressor includes a tank unit that stores compressed air, a motor unit that generates compressed air to be stored in the tank unit, a pressure detection unit that detects a pressure value in the tank unit, and a control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value. The control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed.Type: ApplicationFiled: February 10, 2020Publication date: June 4, 2020Inventors: Shinichi OHKUBO, Tsutomu YOSHIDA, Haruaki AKASAKA
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Patent number: 10598174Abstract: An air compressor includes a tank unit that stores compressed air, a motor unit that generates compressed air to be stored in the tank unit, a pressure detection unit that detects a pressure value in the tank unit, and a control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value. The control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed.Type: GrantFiled: August 5, 2016Date of Patent: March 24, 2020Assignee: MAX CO., LTD.Inventors: Shinichi Ohkubo, Tsutomu Yoshida, Haruaki Akasaka
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Publication number: 20180155486Abstract: A polyisocyanate composition includes an isocyanurate derivative of xylylene diisocyanate, and a biuret derivative of aliphatic polyisocyanate.Type: ApplicationFiled: June 8, 2016Publication date: June 7, 2018Inventors: Shirou HONMA, Kazuyuki FUKUDA, Hideaki OTSUKA, Tsutomu YOSHIDA, Toshiaki MORIYA, Tatsuya NAKASHIMA
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Patent number: 9873676Abstract: The isocyanate composition consists essentially of an isocyanurate derivative of 1,3-xylylenediisocyanate, the isocyanurate derivative is modified with aliphatic alcohol, and the modification amount of the aliphatic alcohol is 0.5 mass % or more and 15 mass % or less.Type: GrantFiled: March 3, 2015Date of Patent: January 23, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Kazuyuki Fukuda, Hideaki Otsuka, Tsutomu Yoshida, Tatsuya Nakashima, Toshiaki Moriya, Shirou Honma
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Patent number: 9725422Abstract: The isocyanurate composition consists essentially of an isocyanurate derivative of 1,3-xylylenediisocyanate, and has a viscosity at 100° C. of 600 mPa·s or more and 20000 mPa·s or less.Type: GrantFiled: March 3, 2015Date of Patent: August 8, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Kazuyuki Fukuda, Hideaki Otsuka, Tsutomu Yoshida, Tatsuya Nakashima, Toshiaki Moriya, Shirou Honma
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Publication number: 20170107186Abstract: The isocyanurate composition consists essentially of an isocyanurate derivative of 1,3-xylylenediisocyanate, and has a viscosity at 100° C. of 600 mPa·s or more and 20000 mPa·s or less.Type: ApplicationFiled: March 3, 2015Publication date: April 20, 2017Inventors: Kazuyuki FUKUDA, Hideaki OTSUKA, Tsutomu YOSHIDA, Tatsuya NAKASHIMA, Toshiaki MORIYA, Shirou HONMA
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Patent number: 9611940Abstract: A gate valve is provided with a main body, and a sealing member which comes into contact with the peripheral edge of a gate when the gate valve is closed. The sealing member includes a protruding first section and a protruding second section which are disposed to extend along the peripheral edge of the main body and protrude from the primary surface when the gate valve is open. A protrusion amount of the first section from the primary surface is greater than a protrusion amount of the second section from the primary surface. The first section is disposed inner to the inner periphery of the primary surface than the second section.Type: GrantFiled: November 1, 2012Date of Patent: April 4, 2017Assignee: NIPPON VALQUA INDUSTRIES, LTD.Inventors: Maksud Uddin Khan, Tsutomu Yoshida
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Publication number: 20170073317Abstract: The isocyanate composition consists essentially of an isocyanurate derivative of 1,3-xylylenediisocyanate, the isocyanurate derivative is modified with aliphatic alcohol, and the modification amount of the aliphatic alcohol is 0.5 mass % or more and 15 mass % or less.Type: ApplicationFiled: March 3, 2015Publication date: March 16, 2017Inventors: Kazuyuki FUKUDA, Hideaki OTSUKA, Tsutomu YOSHIDA, Tatsuya NAKASHIMA, Toshiaki MORIYA, Shirou HONMA
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Publication number: 20170066949Abstract: A laminate adhesive includes a curing agent including a polyisocyanate component and a main component including a polyol component, wherein the polyisocyanate component includes an isocyanurate derivative of xylylenediisocyanate, and in the chromatogram when the isocyanurate derivative of xylylenediisocyanate is subjected to gel permeation chromatograph measurement, the area percentage of a peak area having peak top between the polystyrene-based molecular weight of 400 to 1000 relative to the total peak area is 30% or more and 90% or less.Type: ApplicationFiled: March 3, 2015Publication date: March 9, 2017Inventors: Akihiro IMAI, Hirokazu MATSUKI, Tsutomu YOSHIDA, Tatsuya NAKASHIMA, Toshiaki MORIYA
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Publication number: 20170037842Abstract: An air compressor includes a tank unit that stores compressed air, a motor unit that generates compressed air to be stored in the tank unit, a pressure detection unit that detects a pressure value in the tank unit, and a control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value. The control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed.Type: ApplicationFiled: August 5, 2016Publication date: February 9, 2017Inventors: Shinichi OHKUBO, Tsutomu YOSHIDA, Haruaki AKASAKA
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Patent number: 9528506Abstract: An inverter substrate in which heat generating components which make up an inverter control unit are mounted on a rear surface side thereof is accommodated in a case which is made of a material having a good thermal conductivity in such a manner that the heat generating components are closely contact with a base of the case. The case is provided between a pair of air tanks which are disposed parallel to each other at an interval and on a lower side of at least either of an electric motor and compressors in such a manner as to be oriented downwards so that the base is located at an upper position. An air flow generated by cooling fans which are driven by the electric motor is introduced to flow along the base of the case to thereby cool the heat generating components via the case.Type: GrantFiled: December 22, 2005Date of Patent: December 27, 2016Assignee: MAX CO., LTD.Inventors: Tsutomu Yoshida, Tomohiko Serita
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Publication number: 20160340563Abstract: A polyisocyanate composition produced by reaction of xylylenediisocyanate with trimethylolalkane, the isocyanate derivative content relative to a total amount of the polyisocyanate composition is 45 mass % or less, the isocyanate derivative being produced by reaction of 3 molecules of xylylenediisocyanate with 1 molecule of trimethylolalkane.Type: ApplicationFiled: January 22, 2015Publication date: November 24, 2016Inventors: Takashi UCHIDA, Masakazu MASUI, Tsutomu YOSHIDA, Akihiro IMAI, Hideki TERADA, Tatsuya NAKASHIMA
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Publication number: 20150176713Abstract: A gate valve is provided with a main body, and a sealing member which comes into contact with the peripheral edge of a gate when the gate valve is closed. The sealing member includes a protruding first section and a protruding second section which are disposed to extend along the peripheral edge of the main body and protrude from the primary surface when the gate valve is open. A protrusion amount of the first section from the primary surface is greater than a protrusion amount of the second section from the primary surface. The first section is disposed inner to the inner periphery of the primary surface than the second section.Type: ApplicationFiled: November 1, 2012Publication date: June 25, 2015Inventors: Maksud Uddin Khan, Tsutomu Yoshida
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Patent number: 8911805Abstract: A stable Ca preparation in solution form even at high concentration is provided. The aqueous preparation of Ca includes water, Ca, compounds of Formula I and Formula II. Most of Ca is in non-ionic form and forms a complex. In the complex, Ca binds to the compound(s) of Formula I and/or Formula II in a state that basic structures of them are kept. At least partially, the complex forms colloidal particles. The aqueous preparation is transparent. pH is equal to or higher than that of slightly acid; [A1, A2, A3, A4, A5 and A6 are independently O? or OX. X represents a monovalent or polyvalent cation].Type: GrantFiled: September 27, 2012Date of Patent: December 16, 2014Assignee: Toyo Suisan Kaisha, Ltd.Inventors: Tsutomu Yoshida, Toshitaka Yasuda, Manabu Shimojoh, Kazuyoshi Masaki
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Patent number: 8888106Abstract: In a vacuum gate valve, a seal member for sealing a gate opening part is bonded to an outer edge part of a planar seal plate that is disposed in such a manner that the planar seal plate is opposed to a valve seat surface of the gate opening part and comes into contact with the valve seat surface. The seal member includes a vacuum seal part that is located on a side farther from the gate opening part and maintains the sealability of the gate opening part when the gate opening part is closed, and also includes a radical seal part that is located on a side closer to the gate opening part and that prevents the seal member from being affected by a treatment gas in the gate opening part when the gate opening part is closed. The vacuum seal part is made of a rubber elastic body, and the radical seal part is configured by providing a radical resistant body that is provided with an excellent radical resistance on the rubber elastic body.Type: GrantFiled: September 15, 2009Date of Patent: November 18, 2014Assignee: Nippon Valqua Industries, Ltd.Inventors: Masato Hamade, Tsutomu Yoshida, Nobuhiro Yoshida, Kazuaki Tsuji
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Patent number: 8485534Abstract: A metal gasket includes an outer ring that is formed in a substantially C-shaped cross-section having an opening in a circumferential direction and an inner ring that is disposed inside the outer ring, wherein the inner ring is configured in a polygonal shape of a cross section, and a pair of corner portions opposing to each other in the inner ring are disposed on inner circumferential faces on the both sides of the opening in the outer ring.Type: GrantFiled: May 7, 2009Date of Patent: July 16, 2013Assignees: Tohoku University, Nippon Valqua Industries, Ltd.Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Masayuki Noguchi, Tsutomu Yoshida, Akira Muramatsu, Satoshi Kumaki, Yuki Kuwamura