Patents by Inventor Kohei Doi

Kohei Doi 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: 20240141165
    Abstract: Provided is a polyamide resin composition that has a high electrical resistance in a high temperature region (around 130° C.) while having a high heat resistance. This polyamide resin composition comprises polyamide resin that contains a component unit (a) deriving from an aromatic dicarboxylic acid or alicyclic dicarboxylic acid and a component unit (b2) deriving from 1,3-bis(aminomethyl)cyclohexane. The polyamide resin composition further comprises at least one flame retardant (X) selected from the group consisting of polybrominated styrenes, brominated polystyrenes, and brominated polyphenylenes, or a flame retardant (Y) comprising a prescribed phosphinate salt compound or bisphosphinate salt compound or a polymer thereof.
    Type: Application
    Filed: March 16, 2022
    Publication date: May 2, 2024
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Haruka DOI, Wataru MAKIGUCHI, Kohei NISHINO, Isao WASHIO
  • Publication number: 20240131925
    Abstract: A control device for a vehicle including an operation unit that receives an operation for setting ON or OFF of a plurality of driver assistance functions, wherein at least two or more driver assistance functions among the plurality of driver assistance functions are driver assistance functions classified into a specific group in which the degree of intervention of control for the driving operation is smaller than other driver assistance functions, and the operation unit includes a main switch for collectively setting ON or OFF of the driver assistance functions classified into the specific group.
    Type: Application
    Filed: August 9, 2023
    Publication date: April 25, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi HAMAGUCHI, Shintaro SAIGO, Tomoyuki DOI, Kohei TOCHIGI, Minami SATO
  • Publication number: 20240132695
    Abstract: Provided is a polyamide resin composition that, at high temperatures, suppresses reductions in tensile strength due to the addition of a copper-based heat-resistance stabilizer, and maintains a tensile strength over longer periods of time in a hot environment. The composition includes a polyamide resin and a copper-based heat-resistance stabilizer. The polyamide resin includes: a component unit (a) derived from dicarboxylic acid which is derived from an aromatic dicarboxylic acid or an alicyclic dicarboxylic acid; and greater than or equal to 10 mol % and less than 50 mol % of a component unit (b2), which is derived from 1,3-bis(aminomethyl)cyclohexane, with respect to the total number of moles of a component unit (b) derived from diamine. The content of copper included in the copper-based heat-resistance stabilizer is 0.001 parts by mass to 0.050 parts by mass, inclusive, with respect to 100 total parts by mass of the polyamide resin.
    Type: Application
    Filed: March 15, 2022
    Publication date: April 25, 2024
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Haruka DOI, Wataru MAKIGUCHI, Kohei NISHINO, Isao WASHIO
  • Patent number: 11846366
    Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: December 19, 2023
    Assignee: KYB CORPORATION
    Inventors: Yoshifumi Kobayashi, Tomoyasu Abe, Yuusuke Furuta, Naoaki Danshita, Kohei Doi, Masatoshi Iyatani
  • Publication number: 20230282405
    Abstract: A solenoid includes: a coil; a first fixed iron core disposed on an axial first-end side of the coil; a second fixed iron core disposed on an axial second-end side of the coil with a gap from the first fixed iron core; a tubular first movable iron core disposed between the first fixed iron core and the second fixed iron core: a second movable iron core having a tubular shape with a bottom, slidably inserted into the first movable iron core, disposed between the first fixed iron core and the second fixed iron core with a bottom portion facing the second fixed iron core; and a spring interposed between the first movable iron core and the first fixed iron core, and pressing the first movable iron core to the second fixed iron core side.
    Type: Application
    Filed: August 17, 2021
    Publication date: September 7, 2023
    Applicant: KYB Corporation
    Inventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Toshihiro MORI, Naoaki DANSHITA, Masatoshi IYATANI, Kohei DOI
  • Patent number: 11721464
    Abstract: To provide a solenoid, a solenoid valve, and a damper in which when the amount of current supplied to the solenoid is small, the thrust of the solenoid to bias an object in one direction can be made small, and at the same time, even when the solenoid is not energized, the object can be biased in the same direction as that of the thrust. The solenoid includes a coil, a first movable iron core and a second movable iron core that are attracted in a direction away from each other by energizing the coil, a coil spring that biases the first movable iron core toward the second movable iron core, and a leaf spring that restricts the approach of the first movable iron core and the second movable iron core.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: August 8, 2023
    Assignees: KYB Corporation, TAKAKO INDUSTRIES, INC.
    Inventors: Ryosuke Kamakura, Naoaki Danshita, Kohei Doi
  • Patent number: 11565238
    Abstract: Provided is an adsorption temporary fixing sheet having a sufficient shear adhesive strength in a direction parallel to its surface, and having a weak adhesive strength in a direction vertical to the surface. Also provided is a method of producing such adsorption temporary fixing sheet. The adsorption temporary fixing sheet includes a foam layer including an open-cell structure, wherein, when a silicon chip vertical adhesive strength of a surface of the foam layer after 20 hours at each of such different temperatures as ?40° C., 23° C., or 125° C. is represented by V1 (N/1 cm?), V2 (N/1 cm?), or V3 (N/1 cm?) and when a silicon chip shearing adhesive strength of the surface of the foam layer after 20 hours at each of the different temperatures (?40° C., 23° C., or 125° C.) is represented by H1 (N/1 cm?), H2 (N/1 cm?), or H3 (N/1 cm?), relationships of V1<H1, V2<H2, and V3<H3 are satisfied.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: January 31, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Toru Iseki, Kohei Doi, Mitsuhiro Kanada, Kazumichi Kato, Hideyuki Tokuyama
  • Publication number: 20220252127
    Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring housed in a spring chamber formed on the first fixed iron core side of the first movable iron core and biasing the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a throttle passage that causes the spring chamber to communicate with outside.
    Type: Application
    Filed: September 2, 2020
    Publication date: August 11, 2022
    Applicant: KYB CORPORATION
    Inventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
  • Publication number: 20220252128
    Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a communication passage that causes the first fixed iron core side of the second movable iron core to communicate with the second fixed iron core side.
    Type: Application
    Filed: September 2, 2020
    Publication date: August 11, 2022
    Applicant: KYB CORPORATION
    Inventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
  • Publication number: 20220254555
    Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on one axial end side and the other axial end side of a coil, a first movable member and a second movable member located between those fixed iron cores and configured to be attracted to the first fixed iron core and the second fixed iron core, respectively, by energization of the coil, a spring configured to bias the first movable member toward the second fixed iron core, and a first regulating portion made from a non-magnetic material, provided integrally with the first movable member or the second movable member, and configured to regulate movement of the first movable member toward the second fixed iron core with respect to the second movable member.
    Type: Application
    Filed: September 2, 2020
    Publication date: August 11, 2022
    Applicant: KYB CORPORATION
    Inventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
  • Publication number: 20220243839
    Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.
    Type: Application
    Filed: September 2, 2020
    Publication date: August 4, 2022
    Applicant: KYB CORPORATION
    Inventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
  • Publication number: 20210012939
    Abstract: To provide a solenoid, a solenoid valve, and a damper in which when the amount of current supplied to the solenoid is small, the thrust of the solenoid to bias an object in one direction can be made small, and at the same time, even when the solenoid is not energized, the object can be biased in the same direction as that of the thrust. The solenoid includes a coil, a first movable iron core and a second movable iron core that are attracted in a direction away from each other by energizing the coil, a coil spring that biases the first movable iron core toward the second movable iron core, and a leaf spring that restricts the approach of the first movable iron core and the second movable iron core.
    Type: Application
    Filed: March 6, 2019
    Publication date: January 14, 2021
    Applicants: KYB CORPORATION, TAKAKO INDUSTRIES, INC.
    Inventors: Ryosuke KAMAKURA, Naoaki DANSHITA, Kohei DOI
  • Patent number: 10883018
    Abstract: An adsorption temporary fixing material comprises an adsorption temporary fixing sheet including a foam layer having an open-cell structure, wherein the adsorption temporary fixing material includes the foam layer in the entirety of the sheet or on at least one surface thereof, wherein a shear adhesive strength of a surface of the foam layer with a SUS304BA plate at 23° C. is 1 N/100 mm2 or more at a tensile rate of 50 mm/min, wherein a peel strength of the surface of the foam layer from the SUS304BA plate at 23° C. is 1 N/20 mm or less at a peel angle of 180° and a tensile rate of 300 mm/min, and wherein a weight change ratio after the adsorption temporary fixing sheet has been immersed in distilled water for 1 minute and then water droplets have been wiped off the surface thereof is 50% or less.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 5, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventor: Kohei Doi
  • Patent number: 10857758
    Abstract: Provided is a silicone foam sheet that expresses excellent bubble removability, that has satisfactory adhesiveness with an adherend and satisfactory sealability, that maintains the expression of these effects even when its thickness is reduced, that preferably expresses a stable modulus of elasticity over a region from a low-temperature region to a high-temperature region, and that suppresses both of its compression set in the low-temperature region and its compression set in the high-temperature region to low levels. Also provided is a method of producing such silicone foam sheet. The silicone foam sheet comprises an open-cell structure having a thickness of from 10 ?m to 3,000 ?m, wherein an open-cell ratio is 90% or more, an average cell diameter of the silicone foam sheet is from 1 ?m to 50 ?m, and 90% or more of all cells therein each has a cell diameter of 80 ?m or less.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: December 8, 2020
    Assignees: NITTO DENKO CORPORATION, DOW TORAY CO., LTD.
    Inventors: Kohei Doi, Toru Iseki, Akihiro Nakamura, Syuji Endo
  • Patent number: 10836935
    Abstract: An adsorption temporary fixing material comprises an adsorption temporary fixing sheet including a foam layer having an open-cell structure, wherein the adsorption temporary fixing material includes the foam layer in the entirety of the sheet or on at least one surface thereof, wherein a shear adhesive strength of a surface of the foam layer with a SUS304BA plate at 23° C. is 1 N/100 mm2 or more at a tensile rate of 50 mm/min, wherein a peel strength of the surface of the foam layer from the SUS304BA plate at 23° C. is 1 N/20 mm or less at a peel angle of 180° and a tensile rate of 300 mm/min, and wherein a weight change ratio after the adsorption temporary fixing sheet has been immersed in distilled water for 1 minute and then water droplets have been wiped off the surface thereof is 50% or less.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: November 17, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventor: Kohei Doi
  • Patent number: 10731255
    Abstract: A film forming method comprises loading a substrate on a rotary table, forming an adsorption region for adsorbing a raw material gas to the substrate by discharging the raw material gas from multiple discharge ports, forming a reaction region, to which a reaction gas is supplied, at a position spaced from the adsorption region, separating an atmosphere of the adsorption region and an atmosphere of the reaction region by exhausting and by supplying a purge gas, forming a film by performing a cycle a plurality of times to deposit the reaction product on the substrate, the cycle comprising passing the substrate through the adsorption region and the reaction region and setting a combination of flow rates of the raw material gas for a first pattern in order to perform the cycle with the first pattern and for a second pattern in order to perform the cycle with the second pattern.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 4, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Manabu Honma, Yuka Nakasato, Kohei Doi
  • Publication number: 20200030772
    Abstract: Provided is an adsorption temporary fixing sheet having a sufficient shear adhesive strength in a direction parallel to its surface, and having a weak adhesive strength in a direction vertical to the surface. Also provided is a method of producing such adsorption temporary fixing sheet. The adsorption temporary fixing sheet includes a foam layer including an open-cell structure, wherein, when a silicon chip vertical adhesive strength of a surface of the foam layer after 20 hours at each of such different temperatures as ?40° C., 23° C., or 125° C. is represented by V1 (N/1 cm?), V2 (N/1 cm?), or V3 (N/1 cm?) and when a silicon chip shearing adhesive strength of the surface of the foam layer after 20 hours at each of the different temperatures (?40° C., 23° C., or 125° C.) is represented by H1 (N/1 cm?), H2 (N/1 cm?), or H3 (N/1 cm?), relationships of V1<H1, V2<H2, and V3<H3 are satisfied.
    Type: Application
    Filed: January 22, 2018
    Publication date: January 30, 2020
    Inventors: Toru ISEKI, Kohei DOI, Mitsuhiro KANADA, Kazumichi KATO, Hideyuki TOKUYAMA
  • Patent number: 10316156
    Abstract: There is provided a foamed sheet which takes only a short time to recover the thickness thereof after being compressed, and even if being subjected to repeated impacts, hardly decreases in the impact absorption. The foamed sheet according to the present invention comprises a foamed body formed of a resin composition comprising: a thermoplastic resin a and a silicone-based compound b having not more than 2,000 siloxane bonds; and/or a thermoplastic resin a? having a silicone chain having not more than 2,000 siloxane bonds. The thermoplastic resin a is preferably at least one selected from the group consisting of acrylic polymers, rubbers, urethanic polymers and ethylene-vinyl acetate copolymers. The silicone-based compound b is preferably at least one selected from the group consisting of silicone oils, modified silicone oils and silicone resins.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: June 11, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kohei Doi, Kazumichi Kato, Hideyuki Tokuyama, Tadao Takahashi
  • Publication number: 20190106602
    Abstract: An adsorption temporary fixing material comprises an adsorption temporary fixing sheet including a foam layer having an open-cell structure, wherein the adsorption temporary fixing material includes the foam layer in the entirety of the sheet or on at least one surface thereof, wherein a shear adhesive strength of a surface of the foam layer with a SUS304BA plate at 23° C. is 1 N/100 mm2 or more at a tensile rate of 50 mm/min, wherein a peel strength of the surface of the foam layer from the SUS304BA plate at 23° C. is 1 N/20 mm or less at a peel angle of 180° and a tensile rate of 300 mm/min, and wherein a weight change ratio after the adsorption temporary fixing sheet has been immersed in distilled water for 1 minute and then water droplets have been wiped off the surface thereof is 50% or less.
    Type: Application
    Filed: February 27, 2017
    Publication date: April 11, 2019
    Inventor: Kohei DOI
  • Publication number: 20190001618
    Abstract: Provided is a silicone foam sheet that expresses excellent bubble removability, that has satisfactory adhesiveness with an adherend and satisfactory sealability, that maintains the expression of these effects even when its thickness is reduced, that preferably expresses a stable modulus of elasticity over a region from a low-temperature region to a high-temperature region, and that suppresses both of its compression set in the low-temperature region and its compression set in the high-temperature region to low levels. Also provided is a method of producing such silicone foam sheet. The silicone foam sheet comprises an open-cell structure having a thickness of from 10 ?m to 3,000 ?m, wherein wherein an open-cell ratio is 90% or more, an average cell diameter of the silicone foam sheet is from 1 ?m to 50 ?m, and 90% or more of all cells therein has a cell diameter of 80 ?m or less.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 3, 2019
    Inventors: Kohei DOI, Toru ISEKI, Akihiro NAKAMURA, Syuji ENDO