Patents by Inventor Hitoshi Kubota

Hitoshi 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).

  • Patent number: 11022780
    Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side with a space between each of the lenses. The third lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The sixth lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The seventh lens has a specific Abbe's number. The sixth lens has a specific focal length. The seventh lens has a specific focal length.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 1, 2021
    Assignee: KANTATSU CO., LTD.
    Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
  • Patent number: 11022915
    Abstract: An image forming apparatus includes a belt unit including an endless belt, a supporting unit and a steering unit, and further includes a cleaning unit, a receiving opening and a communicating portion. The communicating portion includes a tube-shaped portion constituted by a bellows-shaped elastic member capable of expansion and contraction with movement of the steering unit.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: June 1, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Kubota, Yasuhiro Shimoi, Hiroki Takayama
  • Patent number: 11016267
    Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens has a convex surface facing the object side near an optical axis thereof. The fifth lens has a convex surface facing the image plane side near an optical axis thereof. The sixth lens has a convex surface facing the image plane side near an optical axis thereof. The first lens is arranged so that a surface thereof on the object side is away from an image plane by a specific distance on an optical axis thereof. The second lens is arranged to be away from the third lens by a specific distance on the optical axis thereof. The third lens has a specific Abbe's number.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: May 25, 2021
    Assignee: KANTATSU CO., LTD.
    Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
  • Patent number: 10996443
    Abstract: An imaging lens includes a first lens having positive refractive power; a second lens having positive refractive power; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The first lens is formed in a meniscus shape to have an object side convex surface. The sixth lens is formed in a meniscus shape to have an object side concave surface. The second lens has a specific focal length. The third lens has a specific focal length. The sixth lens has a specific Abbe's number.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: May 4, 2021
    Assignee: KANTATSU CO., LTD.
    Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
  • Publication number: 20200327459
    Abstract: A ride reservation user support apparatus includes a reservation information acquirer, a location information acquirer, a route information acquirer, a route deviation detector and a notification provider. The reservation information acquirer acquires ride reservation information for identifying a device of a user and a scheduled boarding location where the user boards a vehicle. The location information acquirer acquires location information of the device. The route information acquirer acquires route information that indicates a predicted route, which is predicted to be used by the user, from a location indicated by the location information to the scheduled boarding location. The route deviation detector determines whether the device deviates from the predicted route based on the location information and the route information. The notification provider causes the device to provide a notification to the user in a case where the device deviates from the predicted route.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 15, 2020
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Akira AKITA, Hitoshi KUBOTA, Atsuto SUYAMA
  • Publication number: 20190369530
    Abstract: An image forming apparatus includes a belt unit including an endless belt, a supporting unit and a steering unit, and includes a cleaning unit, a receiving opening and a communicating portion. The communicating portion includes a tube-shaped portion constituted by a bellows-shaped elastic member capable of expansion and contraction with movement of the steering unit.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 5, 2019
    Inventors: Hitoshi Kubota, Yasuhiro Shimoi, Hiroki Takayama
  • Patent number: 10429772
    Abstract: A belt unit removably attached to an apparatus body includes a cleaning unit configured to clean a belt, and a sheet metal configured to hold a blade for cleaning the belt is fixed to the cleaning unit. The sheet metal is in contact with a supporting portion of the apparatus body, whereby vibrations of the sheet metal is reduced.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Kubota
  • Patent number: 10432144
    Abstract: A high-frequency phase-locked oscillation circuit having an extremely narrow peak width and a stable frequency so that a high-frequency wave that is oscillated by the MR element solves a problem of a large peak width of oscillation spectrum. The high-frequency phase-locked oscillation circuit includes a magnetoresistive element that oscillates a high-frequency wave with an oscillating frequency; a reference signal source that outputs a reference signal with a reference frequency; a phase-locked loop circuit having a phase comparator, a loop filter, and a frequency divider; an adder that adds a phase error signal output from the loop filter and a bias voltage for oscillating the high-frequency wave from the magnetoresistive element, and that inputs an added bias voltage to the magnetoresistive element; and a filter provided between the frequency divider and the magnetoresistive element.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: October 1, 2019
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Shingo Tamaru, Hitoshi Kubota, Akio Fukushima, Shinji Yuasa
  • Patent number: 10423095
    Abstract: A developing apparatus includes a developer bearing member bearing and feeding developer including toner and carrier, a first feeding screw arranged in a first chamber and feeding the developer in a first direction, and a second feeding screw arranged in a second chamber and including a first blade portion feeding the developer in a second direction, a second blade portion arranged downstream of the first blade portion and feeding the developer in the first direction, and a third blade portion arranged downstream of the second blade portion. A sealing sheet is arranged upstream of a developer discharging portion and seals initial developer contained in a developing container; and an unsealing mechanism unseals the sealing sheet sealing the initial developer, wherein the sealing sheet is arranged downstream of the second blade portion and upstream of the third blade portion in the second direction.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masafumi Takahashi, Hitoshi Kubota, Yohei Gamo
  • Publication number: 20180302035
    Abstract: The present invention provides a high-frequency phase-locked oscillation circuit having an extremely narrow peak width and a stable frequency so that a high-frequency wave that is oscillated by the MR element solves a problem of a large peak width of oscillation spectrum.
    Type: Application
    Filed: April 27, 2016
    Publication date: October 18, 2018
    Inventors: Shingo Tamaru, Hitoshi Kubota, Akio Fukushima, Shinji Yuasa
  • Publication number: 20180253037
    Abstract: A belt unit removably attached to an apparatus body includes a cleaning unit configured to clean a belt, and a sheet metal configured to hold a blade for cleaning the belt is fixed to the cleaning unit. The sheet metal is in contact with a supporting portion of the apparatus body, whereby vibrations of the sheet metal is reduced.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Inventor: Hitoshi Kubota
  • Publication number: 20180164714
    Abstract: This invention provides a developing apparatus including: first and second chambers containing developer and configured to form a circulation path of the developer; a first feeding member arranged in the first chamber and feeding the developer in a first direction; a second feeding member arranged in the second chamber and feeding the developer in a second direction opposite to the first direction; first and second communication parts through which the developer is transferred; a feeding path having a discharging port and communicating with the first chamber on a downstream side relative to the first communication part in the first direction to feed the developer toward the discharging port; a sealing part sealing the developer; a feeding path sealing part sealing the feeding path on an upstream side relative to the discharging port in the first direction; and an unsealing mechanism receiving a driving force and unsealing the sealing part.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 14, 2018
    Inventors: Masafumi Takahashi, Hitoshi Kubota, Yohei Gamo
  • Patent number: 9645543
    Abstract: A cleaning device includes a cleaning member including a cleaning blade and a supporting plate for supporting the cleaning blade; a frame; first and second fixing portions, provided on the frame, for fixing the supporting plate in one end side and the other end side with respect to a longitudinal direction of the cleaning blade; a recessed portion provided on the frame at a position between the first and second fixing portions with respect to the longitudinal direction and recessed more than the first and second fixing portions in a direction away from the supporting plate; and a sealing material, applied onto the recessed portion within a range of the first and second fixing portions with respect to a perpendicular direction to the longitudinal direction, for sealing between the supporting plate fixed on the first and second fixing portions and the recessed portion.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 9, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Kubota, Hiromasa Katayama
  • Patent number: 9620189
    Abstract: A magnetic memory according to an embodiment includes at least one MTJ element, the MTJ element including: a magnetic multilayer structure including a first magnetic layer in which a direction of magnetization is fixed, a second magnetic layer in which a direction of magnetization is changeable, and a tunnel barrier layer located between the first and second magnetic layers; a first electrode provided on a first surface of the magnetic multilayer structure; a second electrode provided on a second surface of the magnetic multilayer structure; an insulating film provided on a side surface of the magnetic multilayer structure; and a control electrode provided on the side surface of the magnetic multilayer structure with the insulating film located therebetween, a voltage being applied to the control electrode in a read operation, which increases an energy barrier for changing the magnetization of the second magnetic layer.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: April 11, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoharu Shimomura, Eiji Kitagawa, Minoru Amano, Daisuke Saida, Kay Yakushiji, Takayuki Nozaki, Shinji Yuasa, Akio Fukushima, Hiroshi Imamura, Hitoshi Kubota
  • Patent number: 9559963
    Abstract: A communication system according to the present invention includes a plurality of ad hoc communication networks each formed by one or more communication units and one gateway and includes a monitoring server that monitors the ad hoc communication networks. The monitoring server determines on the basis of a monitoring result of load states of the gateways and a monitoring result of a congestion state of radio traffic whether it is necessary to carry out load distribution control for moving a communication unit subordinate to a first gateway to be subordinate to a second gateway set around the first gateway and, when determining that it is necessary to carry out the load distribution control, instructs at least one gateway of the first gateway and the second gateway to broadcast-deliver a signal including control information and instructing reselection of a gateway set as a participation destination.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: January 31, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tsuyoshi Mikoda, Hitoshi Kubota, Toshihiro Inoue, Mitsunobu Abe
  • Publication number: 20170022633
    Abstract: In particular, an object is to show a modified cross-section fiber that is split and used and thus can efficiently produce a fine conjugate fiber. The present disclosure relates to a modified cross-section fiber comprising: (1) a plurality of pieces of conjugate fiber structures comprising a first thermoplastic resin and a second thermoplastic resin having a lower melting or softening point than the first thermoplastic resin and (2) a connected body comprising a third thermoplastic resin having a higher melting or softening point than the second thermoplastic resin, wherein, in an arbitrary fiber cross-section, at least two pieces of the conjugated fiber structure are connected by the connected body.
    Type: Application
    Filed: March 30, 2015
    Publication date: January 26, 2017
    Applicants: ES FiberVisions CO., LTD., ES FiberVisions Hong Kong Limited, ES FiberVisions LP, ES FiberVisions ApS
    Inventor: Hitoshi Kubota
  • Patent number: 9536477
    Abstract: There is provided a display control device including a determination unit configured to determine a type of input information, and a display controller configured to switch modes of a display unit capable of being switched to a mirror surface mode and a display mode in accordance with a result of determination by the determination unit.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: January 3, 2017
    Assignee: SONY CORPORATION
    Inventors: Yoichiro Sako, Etsuko Nakamura, Tsuyoshi Ito, Hitoshi Kubota, Tsuyoshi Nagata, Akira Tange, Masashi Takeda
  • Patent number: 9436053
    Abstract: Provided is a display unit that includes: a pair of a first substrate and a second substrate that are arranged in opposition to each other; a display layer provided between the first substrate and the second substrate; and a display mode switching layer having an aperture for each pixel, and provided between the display layer and the second substrate.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: September 6, 2016
    Assignee: Joled Inc.
    Inventors: Mikihiro Yokozeki, Manabu Kodate, Shuichi Shima, Tsuyoshi Ito, Hitoshi Kubota, Etsuko Nakamura
  • Patent number: 9437810
    Abstract: According to one embodiment, a magnetoresistive element includes a first magnetic layer having a variable magnetization direction; a second magnetic layer having an invariable magnetization direction; and a tunnel barrier layer provided between the first magnetic layer and the second magnetic layer and including an MgFeO film, wherein the MgFeO film contains at least one element selected from a group consisting of Ti, V, Mn, and Cu.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: September 6, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Eiji Kitagawa, Takao Ochiai, Kay Yakushiji, Makoto Konoto, Hitoshi Kubota, Shinji Yuasa, Takayuki Nozaki, Akio Fukushima
  • Patent number: 9415958
    Abstract: An image forming apparatus is provided that can surely position a unit in an apparatus body with a simple configuration where the number of components is small. A drawing apparatus, which draws a sheet feeding cassette as a unit to a predetermined position of the apparatus body to position it, includes : a leaf spring that is an elastic member to jump-buckle; an engaging unit disposed in the leaf spring; and an engaged unit engaged with the engaging unit. When the unit is loaded on the apparatus body, the engaging unit engages the engaged unit, the elastic member jump-buckles, and accordingly the unit is drawn to the predetermined position of the apparatus body.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: August 16, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Kubota, Daijiro Kato