Patents by Inventor Masahiro Hata

Masahiro Hata 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: 20210301756
    Abstract: A fuel injection control apparatus including a microprocessor. The microprocessor is configured to perform calculating injection target values per a combustion cycle, controlling a fuel injector so as to inject fuel in accordance with the injection target values, instructing a switching between a first mode injecting the fuel and a second mode stopping the fuel injection, determining whether it is possible to inject the fuel in accordance with the injection target values when the switching from the second mode to the first mode is instructed, and modifying the injection target values by reducing a target injection frequency when it is determined to be impossible to inject the fuel in accordance with the injection target values, and the controlling including controlling the fuel injector, when the injection target values are modified, so as to inject the fuel in accordance with modified injection target values.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 30, 2021
    Inventors: Masatoshi Nakajima, Masahiro Takeuchi, Hidekazu Hironobu, Daiki Yamazaki, Nobuaki Ito, Ryuichi Hata, Yasunori Shinmi
  • Publication number: 20210062372
    Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 4, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata
  • Patent number: 10837127
    Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: November 17, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata
  • Patent number: 10429086
    Abstract: When hot water supply and room heating are requested simultaneously, a hot water supply operation, by which energy saving is achieved without impairing the comfortability in a room, is performed. A heat-pump apparatus of a variable operation capacity type, a primary water circuit, a hot water tank, a room heater, and a controller are provided. The controller sets a hot water supply operation completion target time in the case of a requests for a simultaneous hot water supply and room heating operation, based on a temperature difference between the outdoor air temperature and the indoor temperature, and determines the rotation speed of the compressor in the hot water supply operation completion target time set.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Jun Yoshida, Taro Hattori, Kazutaka Suzuki, Koji Matsuzawa, Hirokazu Minamisako, Kei Takeyama, Masahiro Hata
  • Publication number: 20190233975
    Abstract: Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/?m2 or more and 2 openings/?m2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.
    Type: Application
    Filed: April 4, 2019
    Publication date: August 1, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroshi HASHIMOTO, Naoki SUGIURA, Yasuyuki FUJII, Hiroko MATSUMURA, Takahiro OKUYA, lsao OOKI, Masahiro HATA, Kouki WAKABAYASHI, Akiyoshi KOGAME, Kazunori SUMIYA, Akito HATAYAMA
  • Publication number: 20190040549
    Abstract: Provided is a carbon fiber bundle for obtaining a fiber-reinforced resin having high mechanical characteristics. A carbon fiber bundle formed of single carbon fibers, each of which has no uneven surface structure of 0.6 ?m or more in length extending in the longitudinal direction of the single fiber; which has an uneven structure having a difference in height (Rp?v) of 5 to 25 nm between the highest portion and the lowest portion of the surface of the single fiber and having an average roughness Ra of 2 to 6 nm; and which has a ratio of the major axis to the minor axis (major axis/minor axis) of a cross-section of the single fiber of 1.00 to 1.01, wherein a mass of the single fiber per unit length falls within the range of 0.030 to 0.042 mg/m; a strand strength is 5900 MPa or more; a strand elastic modulus measured by the ASTM method is 250 to 380 GPa; and a knot tenacity is 900 N/mm2 or more.
    Type: Application
    Filed: October 12, 2018
    Publication date: February 7, 2019
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Naoki SUGIURA, Takahiro OKUYA, Hiroshi HASHIMOTO, Isao OOKI, Hiroko MATSUMURA, Masahiro HATA, Kouki WAKABAYASHI, Akito HATAYAMA
  • Patent number: 10087558
    Abstract: A carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method includes introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced into the flameproofing furnace in a temperature range of 200° C. to 300° C., introducing the flameproofed fiber bundles obtained from the flameproofing treatment into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300° C. to 2500° C. The flameproofing furnace includes a heat-treatment chamber and a sealing chamber adjacent thereto and discharges air from the sealing chamber to outside of the flameproofing furnace. The space velocity (SV) (1/h) of hot air blown from the heat-treatment chamber into the sealing chamber satisfies relationship: 80?SV?400.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: October 2, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akito Hatayama, Naoki Sugiura, Masahiro Hata
  • Patent number: 10030739
    Abstract: A damper device includes a dynamic damper that has third springs coupled to an intermediate member and that also has, as a mass body coupled to the third springs, a turbine runner and a coupling member etc. The third springs of the dynamic damper are disposed so as to overlap both in the axial and radial directions of the damper device second springs that have higher rigidity than first springs and that are disposed inward of the first springs to transfer torque between a drive member and a driven member.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 24, 2018
    Assignees: AISIN AW CO., LTD., AISIN AW INDUSTRIES CO., LTD.
    Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Tomonori Kinoshita, Aki Ogawa, Masahiro Hata
  • Publication number: 20180051894
    Abstract: When hot water supply and room heating are requested simultaneously, a hot water supply operation, by which energy saving is achieved without impairing the comfortability in a room, is performed. A heat-pump apparatus of a variable operation capacity type, a primary water circuit, a hot water tank, a room heater, and a controller are provided. The controller sets a hot water supply operation completion target time in the case of a requests for a simultaneous hot water supply and room heating operation, based on a temperature difference between the outdoor air temperature and the indoor temperature, and determines the rotation speed of the compressor in the hot water supply operation completion target time set.
    Type: Application
    Filed: May 12, 2015
    Publication date: February 22, 2018
    Inventors: Jun YOSHIDA, Taro HATTORI, Kazutaka SUZUKI, Koji MATSUZAWA, Hirokazu MINAMISAKO, Kei TAKEYAMA, Masahiro HATA
  • Patent number: 9873777
    Abstract: Provided are carbon fibers which have a thicker single fiber fineness of the polyacrylonitrile-based precursor fiber bundles and lower production costs, and which have excellent mechanical properties. Also provided are: carbon fiber bundles having a single fiber fineness of 0.8-2.1 dtex, a strand strength of 4.9 GPa or greater, and a strand elastic modulus of 200 GPa or greater; carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles. carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: January 23, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata
  • Patent number: 9862824
    Abstract: The present invention provides: a carbon fiber sizing agent that can obtain a carbon fiber bundle having a superior effect of improving mechanical properties when composited using a resin; an aqueous dispersion thereof; a carbon fiber bundle; a sheet-shaped article having a carbon fiber bundle; and a composite material. The carbon fiber sizing agent contains: a compound (A) that is an ester of an unsaturated monobasic acid and an epoxy compound having a plurality of epoxy groups in the molecule, and that has at least one epoxy group in the molecule; a urethane acrylate oligomer (B) that is bifunctional and that has a tensile elongation rate of the cured product of at least 40%; and a polyurethane resin (C) having a tensile elongation rate of a dried coating film of 350-900% inclusive. The amounts of A-C contained satisfy the conditions described in the description. The aqueous dispersion disperses the sizing agent. The carbon fiber bundle contains 0.6-3.0 mass % inclusive of the sizing agent.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: January 9, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kouki Wakabayashi, Naoki Sugiura, Masahiro Hata, Shigekazu Takeda, Keigo Yoshida, Shuuichi Nakamura
  • Patent number: 9796590
    Abstract: Provided is a carbon fiber manufacturing method including a surface treatment step of ejecting an ozone solution in which ozone is dissolved in solvent from a fluid ejecting port toward a carbon fiber bundle and causing the ozone solution to pass between single fibers of the carbon fiber bundle so as to contact surfaces of the single fibers so that the surfaces of carbon fibers are treated by the ozone solution. Also, provided is a carbon fiber subjected to a surface treatment by the carbon fiber manufacturing method.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: October 24, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takayuki Kiriyama, Masahiro Hata, Hiroyuki Nakao, Nobuyuki Yamamoto, Masashi Shimahara, Kenichi Watanabe, Yasunori Murano, Hiroshi Tategaki
  • Patent number: 9791019
    Abstract: An intermediate member of a damper device includes a plate portion that has spring abutment portions that abut against inner springs. Spring abutment portions of a coupling member of a dynamic damper extend from a fixed portion via a bent portion to be disposed in opening portions of the plate portion, and abut against end portions of third springs disposed in the opening portions such that the third springs are arranged side by side with the inner springs in the circumferential direction. The plate portion and the spring abutment portions at least partially overlap each other in the thickness direction. The axes of the inner springs and the third springs are included within the range of overlap between the plate portion and the spring abutment portions in the thickness direction.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 17, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Masahiro Hata
  • Patent number: 9732824
    Abstract: A damper device 10 includes a dynamic damper 30 that has third springs SP3 coupled to an intermediate member 12 and that also has, as a mass body coupled to the third springs SP3, a turbine runner 5, a coupling member 31, etc. The third springs SP3 of the dynamic damper 30 are disposed so as to overlap both in the axial and radial directions of the damper device 10 second springs SP2 that are disposed inward of the first springs SP1 to transfer torque between a drive member 11 and a driven member 15. A plane PL including the axes of the third springs SP3 and perpendicular to the axis of the damper device 10 is included in the range of the thickness of spring contact portions 31c of the coupling member 31 in the axial direction of the damper device 10.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: August 15, 2017
    Assignees: AISIN AW CO., LTD., AISIN AW INDUSTRIES CO.
    Inventors: Yoshihiro Takikawa, Yoichi Oi, Takayuki Miyaoka, Yuichiro Hirai, Makoto Yamaguchi, Takuya Yoshikawa, Tomonori Kinoshita, Aki Ogawa, Masahiro Hata
  • Publication number: 20160208885
    Abstract: An intermediate member of a damper device includes a plate portion that has spring abutment portions that abut against inner springs. Spring abutment portions of a coupling member of a dynamic damper extend from a fixed portion via a bent portion to be disposed in opening portions of the plate portion, and abut against end portions of third springs disposed in the opening portions such that the third springs are arranged side by side with the inner springs in the circumferential direction. The plate portion and the spring abutment portions at least partially overlap each other in the thickness direction. The axes of the inner springs and the third springs are included within the range of overlap between the plate portion and the spring abutment portions in the thickness direction.
    Type: Application
    Filed: October 16, 2014
    Publication date: July 21, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Masahiro HATA
  • Publication number: 20160040322
    Abstract: A carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method includes introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced into the flameproofing furnace in a temperature range of 200° C. to 300° C., introducing the flameproofed fiber bundles obtained from the flameproofing treatment into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300° C. to 2500° C. The flameproofing furnace includes a heat-treatment chamber and a sealing chamber adjacent thereto and discharges air from the sealing chamber to outside of the flameproofing furnace. The space velocity (SV) (1/h) of hot air blown from the heat-treatment chamber into the sealing chamber satisfies relationship: 80?SV?400.
    Type: Application
    Filed: March 26, 2014
    Publication date: February 11, 2016
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Akito HATAYAMA, Naoki SUGIURA, Masahiro HATA
  • Publication number: 20150354664
    Abstract: A damper device 10 includes a dynamic damper 30 that has third springs SP3 coupled to an intermediate member 12 and that also has, as a mass body coupled to the third springs SP3, a turbine runner 5, a coupling member 31, etc. The third springs SP3 of the dynamic damper 30 are disposed so as to overlap both in the axial and radial directions of the damper device 10 second springs SP2 that are disposed inward of the first springs SP1 to transfer torque between a drive member 11 and a driven member 15. A plane PL including the axes of the third springs SP3 and perpendicular to the axis of the damper device 10 is included in the range of the thickness of spring contact portions 31c of the coupling member 31 in the axial direction of the damper device 10.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 10, 2015
    Applicants: AISIN AW INDUSTRIES CO., LTD., AISIN AW CO., LTD.
    Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Tomonori KINOSHITA, Aki OGAWA, Masahiro HATA
  • Publication number: 20150337934
    Abstract: A damper device includes a dynamic damper that has third springs coupled to an intermediate member and that also has, as a mass body coupled to the third springs, a turbine runner and a coupling member etc. The third springs of the dynamic damper are disposed so as to overlap both in the axial and radial directions of the damper device second springs that have higher rigidity than first springs and that are disposed inward of the first springs to transfer torque between a drive member and a driven member.
    Type: Application
    Filed: January 30, 2014
    Publication date: November 26, 2015
    Applicants: AISIN AW INDUSTRIES CO., LTD., AISIN AW CO., LTD.
    Inventors: Yoshihiro TAKIKAWA, Yoichi OI, Takayuki MIYAOKA, Yuichiro HIRAI, Makoto YAMAGUCHI, Takuya YOSHIKAWA, Tomonori KINOSHITA, Aki OGAWA, Masahiro HATA
  • Publication number: 20150114262
    Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.
    Type: Application
    Filed: April 18, 2013
    Publication date: April 30, 2015
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata
  • Publication number: 20150094401
    Abstract: Provided are carbon fibers which have a thicker single fiber fineness of the polyacrylonitrile-based precursor fiber bundles and lower production costs, and which have excellent mechanical properties. Also provided are: carbon fiber bundles having a single fiber fineness of 0.8-2.1 dtex, a strand strength of 4.9 GPa or greater, and a strand elastic modulus of 200 GPa or greater; carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles. carbon fiber bundles having a single fiber fineness of 0.8-2.5 dtex, a strand strength of 3.0 GPa or greater, and a strand elastic modulus of 240 GPa or greater; and an optimal method for producing said carbon fiber bundles.
    Type: Application
    Filed: April 18, 2013
    Publication date: April 2, 2015
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Takayuki Kiriyama, Naoki Sugiura, Masahiro Hata