Patents by Inventor Masaya Kubota

Masaya Kubota 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: 20240182810
    Abstract: A lubricating oil composition, including a base oil (P) and a copolymer (X). The copolymer (X) contains the following structural units (a) to (c): structural unit (a): a structural unit derived from a monomer (A) having a (meth)acryloyl group and a linear or branched alkyl group having 6 to 24 carbon atoms, structural unit (b): a structural unit derived from a monomer (B) having a (meth)acryloyl group and a polar group, and structural unit (c): a structural unit derived from a monomer (C) having a polymerizable functional group and a cyclic structural group. The copolymer (X) has a mass-average molecular weight (Mw) of 5,000 to 50,000, a content of the copolymer (X) in terms of resin content is 0.10% by mass to 2.5% by mass based on the total amount of the lubricating oil composition, and the lubricating oil composition has a 100° C. kinematic viscosity of 8.2 mm2/s or less.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 6, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Kenji SUNAHARA, Shoichiro FUJITA, Masaya KUBOTA, Shota KATO
  • Patent number: 11987478
    Abstract: Provided is a guide display device with which incorrect recognition of a place having small features as a ground surface having no features can be suppressed in generating and updating a three-dimensional map. A data processing unit (70): detects an edge (Eg) of a feature (E) on the basis of a result of subjecting image data captured by a camera (61) to image processing, and recognizes the feature (E) on the basis of the edge (Eg); and accumulates, from a predetermined number of frames from before the time at which the image data was captured, point group data (P) of a nearby range (Ma) of the edge (Eg) of the feature (E) that was recognized as a ground surface (F), and generates, on the basis of the accumulated point group data (P), a three-dimensional map (M) of the feature (E) the edge (Eg) of which has been recognized.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: May 21, 2024
    Assignees: TADANO LTD., THE SCHOOL CORPORATION KANSAI UNIVERSITY
    Inventors: Iwao Ishikawa, Takayuki Kosaka, Keita Mashima, Satoshi Kubota, Shigenori Tanaka, Masaya Nakahara, Koki Nakahata
  • Publication number: 20240158716
    Abstract: A lubricating oil composition containing a base oil (A), a molybdenum-based friction modifier (B), and a benzotriazole-based compound (C). The molybdenum-based friction modifier (B) contains a compound (B1) represented by the following general formula (b1): R1-R4 and X1-X4 are as defined in the disclosure. A content of the benzotriazole-based compound (C) is 0.03 mass % or less based on a total amount of the lubricating oil composition, and a kinematic viscosity at 100° C. of the lubricating oil composition is 9.3 mm2/s or less.
    Type: Application
    Filed: February 24, 2022
    Publication date: May 16, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masaya KUBOTA, Kenji SUNAHARA
  • Patent number: 11958725
    Abstract: A guide display unit for a crane, wherein a data processing unit: calculates a measurement area corresponding to the measurement area of a camera; the measurement area from the viewpoint of the camera and generates a first image; performs mosaic-processing on the image captured by the camera according to the particle size of the three-dimensional map and generates a second image; performs registration processing on the first image and the second image and calculates the amount of deviation between the first image and the second image; corrects the position of a guide frame figure with respect to the image of a suspended load and a feature on the basis of the calculated amount of deviation; and overlays the guide frame figure on the images of the suspended load and the feature and displays the result on the data display unit.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: April 16, 2024
    Assignees: TADANO LTD., THE SCHOOL CORPORATION KANSAI UNIVERSITY
    Inventors: Iwao Ishikawa, Takayuki Kosaka, Keita Mashima, Satoshi Kubota, Shigenori Tanaka, Masaya Nakahara, Koki Nakahata
  • Publication number: 20240110121
    Abstract: A lubricating oil composition containing a base oil (A), a molybdenum-based friction modifier (B), a metal-based detergent (C), and a dispersant (D), in which the dispersant (D) contains a non-boron-modified polyisobutenyl succinic bisimide (D1). The IR spectrum of the non-boron-modified polyisobutenyl succinic bisimide (D1) is determined by an FT-IR method, having a ratio [Abs (1705 cm?1)/Abs (1390 cm?1)] of a peak intensity Abs (1705 cm?1) at 1705 cm?1 to a peak intensity Abs (1390 cm?1) at 1390 cm?1 is 7.5 or less. A content of the non-boron-modified polyisobutenyl succinic bisimide (D1) is 50 mass % or more based on a total amount of the dispersant (D), and contains a kinematic viscosity at 100° C. is 9.3 mm2/s or less. The lubricating oil composition has an excellent effect of reducing a friction coefficient while containing a molybdenum-based friction modifier and a succinimide compound.
    Type: Application
    Filed: February 4, 2022
    Publication date: April 4, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Kenji SUNAHARA, Jun YAMASHITA, Masaya KUBOTA, Shoichiro FUJITA
  • Publication number: 20240101924
    Abstract: A lubricating oil composition may contain a base oil (A) and a dispersant-type viscosity index improver (B), in which the nitrogen atom content based on the solid content of the dispersant-type viscosity index improver (B) is 0.50 to 1.50% by mass, and the weight-average molecular weight (Mw) thereof is 100,000 or more, and the content in terms of the solid content based on the total amount of the composition of the dispersant-type viscosity index improver (B) is more than 0.05% by mass and less than 5.0% by mass. The lubricating oil composition may exert excellent wear resistance in a state contaminated with soot.
    Type: Application
    Filed: March 4, 2022
    Publication date: March 28, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shoichiro FUJITA, Kenji SUNAHARA, Tsukasa YAMAGISHI, Masaya KUBOTA
  • Publication number: 20230076704
    Abstract: A mixed composition including a refrigerant including at least one unsaturated fluorinated hydrocarbon compound selected from the compound having a formula CxFyHz, x is an integer of 2 to 6, y is an integer of 1 to 11, z is an integer of 1 to 11, and the compound has at least one unsaturated carbon-carbon bond, and a refrigerator oil including a base oil (A); a phosphorus-based extreme pressure agent (B); a decomposition inhibitor (C) that inhibits the decomposition of the unsaturated fluorinated hydrocarbon in the presence of an iron; and an antioxidant (D), wherein (C) controls the amount of fluorine in the refrigerator oil composition at 30 ppm by mass or less after mixing the refrigerator oil with R1234yf at a mass ratio of 1:1, and subjecting the mixture to an autoclave test at 175° C. for 336 hours with a metal catalyst including iron, copper, and aluminum.
    Type: Application
    Filed: February 19, 2021
    Publication date: March 9, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: So NAKAJIMA, Masaya KUBOTA
  • Patent number: 11364974
    Abstract: A hydrofoil craft includes a hull including a bottom that spreads from a bow to a stern; and a hydrofoil mechanism provided on the bow side of the hull. The hull further includes an accommodating recess formed therein, and the accommodating recess is recessed toward the stern side between the bow and the bottom to accommodate the hydrofoil mechanism. A retreat surface is formed between the bottom and a recess main surface facing the bow side in the accommodating recess, and the retreat surface extends toward the stern side in a downward direction and is connected to the bottom.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: June 21, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Katsuhiko Shoda, Masaya Kubota, Takashi Okafuji, Masashi Sasaki
  • Publication number: 20210179230
    Abstract: A hydrofoil craft includes: a hull including a bottom that spreads from a bow to a stern; and a hydrofoil mechanism provided on the bow side of the hull. The hull includes an accommodating recess formed therein, the accommodating recess being recessed toward the stern side between the bow and the bottom to accommodate the hydrofoil mechanism. A retreat surface is formed between the bottom and a recess main surface facing the bow side in the accommodating recess, the retreat surface extending toward the stern side in a downward direction and being connected to the bottom.
    Type: Application
    Filed: November 17, 2020
    Publication date: June 17, 2021
    Inventors: Katsuhiko SHODA, Masaya KUBOTA, Takashi OKAFUJI, Masashi SASAKI
  • Patent number: 8249786
    Abstract: A control apparatus for an automatic transmission includes a shift control section configured to perform a shift of the automatic transmission; and a judder judging section. The shift control section is configured to judge whether or not a progress of the shift is during an inertia phase. The judder judging section calculates a characteristic-gradient index value which is a value obtained by quantifying a phenomenon that appears as a relative rotational speed between input and output of the first friction-engagement element becomes reduced with a progress of the inertia phase. The phenomenon appears in a different way in dependence upon whether a relational characteristic of a friction coefficient of the first friction-engagement element with respect to the relative rotational speed is a positive-gradient characteristic or a negative-gradient characteristic. The judder judging section determines that the judder has occurred based on the characteristic-gradient index value.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: August 21, 2012
    Assignee: JATCO Ltd
    Inventors: Jun Yoshino, Masaya Kubota
  • Patent number: 8065065
    Abstract: A lock-up control system including a lock-up differential pressure generator and a controller that is programmed to: when increasing a lock-up differential pressure command value with time to establish the lock-up state of the torque converter, switch a gradient of the lock-up differential pressure command value from a first gradient to a predetermined gradient larger than the first gradient when an actual slip rotation speed is decreased to a predetermined slip rotation speed value or less; and switch the gradient of the lock-up differential pressure command value from the predetermined gradient to a second gradient smaller than the predetermined gradient when the actual slip rotation speed exceeds the predetermined slip rotation speed value again after being decreased to the predetermined slip rotation speed value or less.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: November 22, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Katsunori Satou, Masaya Kubota, Hiroyuki Takenaka, Kan Yagi, Seiji Totsuka
  • Patent number: 7780571
    Abstract: An automatic transmission control apparatus includes an engine rotational speed limit verifying section and a shift control characteristic changing section. The engine rotational speed limit verifying section is configured to receive an engine rotational speed limit value for limiting an engine rotational speed and determine if the engine rotational speed limit value is lower than a prescribed normal upper limit value. The shift control characteristic changing section is configured to change a shift schedule of an automatic transmission based on the engine rotational speed being limited by the engine rotational speed limit value and the automatic transmission having a stronger tendency to select a higher gear stage than if the engine rotational speed limit value was not being limited to a lower value than the prescribed normal limit value, when the engine rotational speed limit value is determined to lower than the prescribed normal upper limit value.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: August 24, 2010
    Assignee: JATCO Ltd
    Inventors: Kan Yagi, Jun Yoshino, Hitoshi Yokose, Tsuyoshi Mori, Katsunori Satou, Masaya Kubota, Hiroyuki Takenaka, Makoto Hashimoto
  • Publication number: 20100057314
    Abstract: A control apparatus for an automatic transmission includes a shift control section configured to perform a shift of the automatic transmission by engaging a first friction-engagement element and releasing a second friction-engagement element; and a judder judging section configured to judge an occurrence of judder due to self-exited vibration. The shift control section is configured to judge whether or not a progress of the shift is during an inertia phase. The judder judging section calculates a characteristic-gradient index value which is a value obtained by quantifying a phenomenon that appears as a relative rotational speed between input and output of the first friction-engagement element becomes reduced with a progress of the inertia phase.
    Type: Application
    Filed: August 3, 2009
    Publication date: March 4, 2010
    Inventors: JUN YOSHINO, MASAYA KUBOTA
  • Publication number: 20080312036
    Abstract: An automatic transmission control apparatus includes an engine rotational speed limit verifying section and a shift control characteristic changing section. The engine rotational speed limit verifying section is configured to receive an engine rotational speed limit value for limiting an engine rotational speed and determine if the engine rotational speed limit value is lower than a prescribed normal upper limit value. The shift control characteristic changing section is configured to change a shift schedule of an automatic transmission based on the engine rotational speed being limited by the engine rotational speed limit value and the automatic transmission having a stronger tendency to select a higher gear stage than if the engine rotational speed limit value was not being limited to a lower value than the prescribed normal limit value, when the engine rotational speed limit value is determined to lower than the prescribed normal upper limit value.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 18, 2008
    Applicant: JATCO LTD
    Inventors: Kan YAGI, Jun YOSHINO, Hitoshi YOKOSE, Tsuyoshi MORI, Katsunori SATOU, Masaya KUBOTA, Hiroyuki TAKENAKA, Makoto HASHIMOTO
  • Publication number: 20080312800
    Abstract: A lock-up control system including a lock-up differential pressure generator and a controller that is programmed to: when increasing a lock-up differential pressure command value with time to establish the lock-up state of the torque converter, switch a gradient of the lock-up differential pressure command value from a first gradient to a predetermined gradient larger than the first gradient when an actual slip rotation speed is decreased to a predetermined slip rotation speed value or less; and switch the gradient of the lock-up differential pressure command value from the predetermined gradient to a second gradient smaller than the predetermined gradient when the actual slip rotation speed exceeds the predetermined slip rotation speed value again after being decreased to the predetermined slip rotation speed value or less.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 18, 2008
    Inventors: Katsunori Satou, Masaya Kubota, Hiroyuki Takenaka, Kan Yagi, Seiji Totsuka
  • Patent number: 7243199
    Abstract: A memory data protection system is disclosed, which comprises a memory circuit, a protection contents indicating section which stores a security bit and a protection bit, a protection function circuit which determines permission/prohibition of reading of data from the memory circuit and permission/prohibition of writing of data to the memory circuit in accordance with the security bit and the protection bit, and a protection function locking/unlocking circuit which makes the protection function circuit in a lock state to forcibly prohibit reading of data from the memory circuit and writing of data into the memory circuit in a time period from when a power supply is turned on till when the protection function circuit completes reading of the security bit and the protection bit from the protection contents indicating section into data buses, and after lapse of the time period, the protection function locking/unlocking circuit unlocks the lock state.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: July 10, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyoharu Oikawa, Kimio Maruyama, Yasuhiro Watanabe, Naokazu Kuzuno, Masaya Kubota
  • Patent number: 7167393
    Abstract: A plurality of dummy cells which generate reference potential corresponding to a capacitance of a bit line each have a floating gate, control gate and first and second diffusion layers. The first and second diffusion layers of each dummy cell are commonly connected by use of a wiring.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: January 23, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyoharu Oikawa, Yukihiro Nishida, Masaya Kubota, Junji Morita
  • Patent number: 7123527
    Abstract: A redundancy fuse circuit including a function of replacing a defective cell in a memory cell array with a redundancy cell, comprising a fuse circuit in which an address of the defective cell or a block including the defective cell is programmed as a defective address by presence/absence of cut-off of a fuse, a data latch circuit which latches a signal supplied from a tester to program the defective address in a dummy manner, and a comparator which replaces the defective cell with the redundancy cell based on an address signal supplied from the tester and an output signal of the data latch circuit at an operation confirmation time of the redundancy fuse circuit.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: October 17, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naokazu Kuzuno, Kiyoharu Oikawa, Kimio Maruyama, Yasuhiro Watanabe, Masaya Kubota
  • Publication number: 20050088877
    Abstract: A plurality of dummy cells which generate reference potential corresponding to a capacitance of a bit line each have a floating gate, control gate and first and second diffusion layers. The first and second diffusion layers of each dummy cell are commonly connected by use of a wiring.
    Type: Application
    Filed: August 23, 2004
    Publication date: April 28, 2005
    Inventors: Kiyoharu Oikawa, Yukihiro Nishida, Masaya Kubota, Junji Morita
  • Publication number: 20040240249
    Abstract: A redundancy fuse circuit including a function of replacing a defective cell in a memory cell array with a redundancy cell, comprising a fuse circuit in which an address of the defective cell or a block including the defective cell is programmed as a defective address by presence/absence of cut-off of a fuse, a data latch circuit which latches a signal supplied from a tester to program the defective address in a dummy manner, and a comparator which replaces the defective cell with the redundancy cell based on an address signal supplied from the tester and an output signal of the data latch circuit at an operation confirmation time of the redundancy fuse circuit.
    Type: Application
    Filed: March 19, 2004
    Publication date: December 2, 2004
    Inventors: Naokazu Kuzuno, Kiyoharu Oikawa, Kimio Maruyama, Yasuhiro Watanabe, Masaya Kubota