Patents by Inventor Akira Ishii

Akira Ishii 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: 9175127
    Abstract: The present invention relates to a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of: (i) introducing into a mixing tank equipped with an inlet for injecting a diisocyanate an aliphatic polyester prepolymer which has a number average molecular weight of 5000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, wherein the aliphatic polyester prepolymer is introduced above the position of the inlet and wherein the aliphatic polyester prepolymer is melted at a temperature not lower than a melting point of the prepolymer and is in a liquid state, (ii) injecting a diisocyanate into the aliphatic polyester prepolymer, wherein the amount of diisocyanate is equivalent to between one tenth and two times the amount of the hydroxyl groups in the aliphatic polyester prepolymer; and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: November 3, 2015
    Assignee: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Akira Ishii
  • Publication number: 20150212370
    Abstract: Light emitted by a backlight can be prevented from leaking through a chamfered portion of a front window of a liquid crystal display device. An upper polarizing plate is bonded over the counter substrate, and a front window is bonded over the upper polarizing plate with a UV-curable resin adhesive. The front window is chamfered and a light shielding member is formed on the chamfered portion. The UV adhesive exists between the chamfered portion and the surface of the upper polarizing plate or the counter substrate, and an outer end of the polarizing plate exists at a point outer than an outer end of the front window. Since the light shielding member for the chamfered portion is formed, light from the backlight does not penetrate from the chamfered portion. Thus, light leakage at a periphery of a screen can be prevented even when the view angle is large.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 30, 2015
    Applicant: Japan Display Inc.
    Inventors: Takeshi HARAYAMA, Takashi YOSHIMOTO, Katsuhiko ISHII, Setsuo KOBAYASHI, Akira ISHII, Shinji TANABE, Kiyoshi SENTO
  • Patent number: 9046153
    Abstract: There is provide a ratchet-type tensioner that enables to readily disengage a plunger from a ratchet element in maintaining an engine, that engages the plunger reliably with the ratchet element in operating the engine so as to reduce flapping noise, and that prevents seizure of the plunger. A ratchet releasing mechanism X configured to release an engagement of the ratchet teeth 151 of the ratchet element 150 with the rack teeth 122 of the plunger 120 by means of a tool pin T includes a ratchet releasing pin guide hole 114 formed through the housing body 110 to insert a pin edge portion T1 of the tool pin T into a plunger-side edge region of the ratchet element 150 and a ratchet releasing pin engaging hole 155 formed in the plunger-side edge region of the ratchet element 150 to guide and engage the pin edge portion T1 of the tool pin T inserted from the ratchet releasing pin guide hole 114.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: June 2, 2015
    Assignee: Tsubakimoto Chain Co.
    Inventors: Osamu Yoshida, Yuuji Kurematsu, Akira Ishii
  • Patent number: 9042147
    Abstract: A power inverter includes a power semiconductor module that includes a power semiconductor device, a control circuit board that outputs a control signal used for controlling the power semiconductor device, a driver circuit board that outputs a driving signal used for driving the power semiconductor device, a conductive metal base plate arranged in a space between the driver circuit board and the control circuit board in which a fine and long opening portion is formed, wiring that connects the driver circuit board and the control circuit board through the opening portion and delivers the control signal to the driver circuit board, and an AC busbar that is arranged on a side opposite to the metal base plate through the driver circuit board and delivers an AC current output from the power semiconductor module to a drive motor. At least a portion of the AC busbar that faces the opening portion extends in a direction directly running in a longitudinal direction of the fine and long opening portion.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 26, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Akira Ishii, Keisuke Fukumasu
  • Patent number: 9025115
    Abstract: Light emitted by a backlight can be prevented from leaking through a chamfered portion of a front window of a liquid crystal display device. An upper polarizing plate is bonded over the counter substrate, and a front window is bonded over the upper polarizing plate with a UV-curable resin adhesive. The front window is chamfered and a light shielding member is formed on the chamfered portion. The UV adhesive exists between the chamfered portion and the surface of the upper polarizing plate or the counter substrate, and an outer end of the polarizing plate exists at a point outer than an outer end of the front window. Since the light shielding member for the chamfered portion is formed, light from the backlight does not penetrate from the chamfered portion. Thus, light leakage at a periphery of a screen can be prevented even when the view angle is large.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 5, 2015
    Assignee: Japan Display Inc.
    Inventors: Takeshi Harayama, Takashi Yoshimoto, Katsuhiko Ishii, Setsuo Kobayashi, Akira Ishii, Shinji Tanabe, Kiyoshi Sento
  • Patent number: 9002439
    Abstract: The present invention relates to a blood vessel wall analyzing apparatus provided with a structure enabling accurate measurement of plaque components in a blood vessel wall in a state that reduces the burden on a patient. In the blood vessel wall analyzing apparatus (1), measurement light is illuminated onto a measured portion within a blood vessel such as a carotid artery (C) from a light illuminating unit (30) provided outside the blood vessel, while light from the measured portion is detected in a light receiving unit (40) provided outside the blood vessel. Thus, since the status of the blood vessel wall can be analyzed without inserting an apparatus involved in measurement into the blood vessel, the burden on the patient is reduced during measurement.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: April 7, 2015
    Assignees: Sumitomo Electric Industries, Ltd., Kyoto University, Keio University
    Inventors: Kazunori Okada, Hiroshi Suganuma, Tatsuhiko Saito, Masato Tanaka, Akira Ishii, Toshihiro Munemitsu, Eiji Okada
  • Patent number: 8964150
    Abstract: Provided is a liquid crystal display device, including: a liquid crystal display panel; a plate-shaped component having a light permeable region, the plate-shaped component being disposed so as to face a display surface of the liquid crystal display panel; a pressure sensitive adhesive layer having light permeability, which is adhered under pressure onto the display surface of the liquid crystal display panel; and an adhesive layer having light permeability, which is adhered onto a surface of the plate-shaped component facing the display surface, in which the plate-shaped component is mounted on the liquid crystal display panel through intermediation of the pressure sensitive adhesive layer and the adhesive layer.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Japan Display Inc.
    Inventors: Akira Ishii, Setsuo Kobayashi, Katsuhiko Ishii, Shinji Tanabe, Kiyoshi Sento
  • Patent number: 8953123
    Abstract: In a liquid crystal display device having a front window, light from a backlight is prevented from leaking through chamfered edges of the front window. An upper polarizing plate is formed on an opposing substrate and a light shielding material is formed abutting on an outer edge of the upper polarizing plate. Edges of the upper polarizing plate are located inward of edges of the front window. The upper polarizing plate and the front window are bonded with a boding material including an ultraviolet curable resin. The ultraviolet curable resin also lies over the light shielding material. Chamfers are formed in the front window and the ultraviolet curable resin does not adhere to the chamfers of the front window. By this structure, light from the backlight is prevented from entering the internal part of the front window through the chamfers of the front window and light leakage is prevented.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 10, 2015
    Assignee: Japan Display Inc.
    Inventors: Takeshi Harayama, Takashi Yoshimoto, Katsuhiko Ishii, Setsuo Kobayashi, Akira Ishii, Shinji Tanabe, Kiyoshi Sento
  • Patent number: 8939856
    Abstract: Deaeration of the high pressure oil chamber of a hydraulic tensioner takes place though a helical orifice formed by opposed flanks of the threads of a threaded hole in the tensioner housing and the threads of a screw inserted into the hole. The opposed flanks are maintained in spaced relationship by a force exerted by a spring washer disposed between the head of the screw and a surface of the tensioner housing surrounding the opening of the threaded hole. The flank of the thread of the hole that forms part of the boundary of the helical orifice can have a concave curvature in order to increase the aperture of the air flow path. A groove in the surface surrounding the opening of the threaded hole prevents the washer from sealing off the flow of air. This groove is disposed with its exit end at a level above its entry end.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 27, 2015
    Assignee: Tsubakimoto Chain Co.
    Inventors: Yuji Kurematsu, Osamu Yoshida, Munehiro Maeda, Akira Ishii
  • Patent number: 8926460
    Abstract: There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner 100 is arranged so that the spring stopping washer has a C-ring anchored in the rear-end area of the ratchet-receiving hole by fitting in a diameter-reduced state and by enlarging its diameter within an anchoring circumferential groove of the ratchet-receiving hole and a spring stopping piece extended from the C-ring to a ring center area to seat the ratchet biasing spring.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: January 6, 2015
    Assignee: Tsubakimoto Chain Co.
    Inventors: Yuji Kurematsu, Munehiro Maeda, Osamu Yoshida, Akira Ishii, Toyonaga Saitoh
  • Patent number: 8865081
    Abstract: The problem to be solved by the present invention is to provide a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight which prevents evaporation of diisocyanate at the step of mixing the diisocyanate with the aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point of the prepolymer and enables uniform mixing of the diisocyanate with the aliphatic polyester prepolymer.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 21, 2014
    Assignee: Showa Denko K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Akira Ishii
  • Patent number: 8852517
    Abstract: The present invention addresses the problem of providing a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight by preventing evaporation of a diisocyanate when blending the diisocyanate with an aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point thereof so that the diisocyanate and the aliphatic polyester prepolymer are uniformly blended.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: October 7, 2014
    Assignee: Showa Denko K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Akira Ishii
  • Publication number: 20140275437
    Abstract: The present invention relates to a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of: (i) introducing into a mixing tank equipped with an inlet for injecting a diisocyanate an aliphatic polyester prepolymer which has a number average molecular weight of 5000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, wherein the aliphatic polyester prepolymer is introduced above the position of the inlet and wherein the aliphatic polyester prepolymer is melted at a temperature not lower than a melting point of the prepolymer and is in a liquid state, (ii) injecting a diisocyanate into the aliphatic polyester prepolymer, wherein the amount of diisocyanate is equivalent to between one tenth and two times the amount of the hydroxyl groups in the aliphatic polyester prepolymer; and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate.
    Type: Application
    Filed: October 17, 2012
    Publication date: September 18, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Akira Ishii
  • Patent number: 8821326
    Abstract: In a ratchet-type tensioner having a plunger with rack teeth formed thereon and a piston with ratchet teeth that engage the rack teeth, the ratchet teeth can be disengaged from the rack teeth by insertion of a tool through a tool insertion hole in the tensioner housing and exerting a prying action on the toothed end of the piston to move the piston away from the plunger. Alternatively if an oblique camming surface is formed on the toothed end of the piston, the ratchet teeth can be disengaged from the rack teeth by pushing the tool inward against the oblique camming surface. The piston and the hole in which it slides are shaped to prevent rotation of the piston. The ratchet teeth on the piston and the rack teeth on the plunger can be oblique to allow setback of the plunger when excessive force is exerted on the plunger.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: September 2, 2014
    Assignee: Tsubakimoto Chain Co.
    Inventors: Osamu Yoshida, Yuji Kurematsu, Munehiro Maeda, Akira Ishii
  • Patent number: 8786870
    Abstract: An image-forming apparatus forms a test image on a sheet being transported. The test image includes a defect detection image for image defect detection and a plurality of marks for detecting the angle of inclination of the test image on the sheet in a two-dimensional plane extending in a transport direction of the sheet and a width direction of the sheet crossing the transport direction. The plurality of marks are formed at positions remote from each other in a central region of the sheet in the width direction. The image-forming apparatus then reads the test image, detects the plurality of marks, calculates the angle of inclination of the test image based on the plurality of marks, corrects the test image for inclination based on the calculated angle of inclination, and detects an image defect based on corrected-image data representing the corrected test image.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: July 22, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshifumi Takebe, Akira Ishii, Kiyotaka Tsuchibuchi
  • Patent number: 8740736
    Abstract: In a ring-type tensioner, an expansible elastic ring disposed in a groove formed in the wall of a plunger-accommodating hole cooperates with teeth formed on the plunger to restrict axial movement of the plunger. The ring and the groove in the wall of the plunger-accommodating hole have flat radial surfaces for mutual engagement. However the ring also has oblique plunger-tooth engaging surfaces. The ring has manipulable end parts that can be locked in fixed relation to each other by a tool to secure the plunger against axial movement. The tool can also be inserted into a gap between the manipulable end parts to expand the ring and thereby release the plunger.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Tsubakimoto Chain Co.
    Inventors: Yuji Kurematsu, Osamu Yoshida, Munehiro Maeda, Akira Ishii
  • Patent number: 8734278
    Abstract: A ratchet-type tensioner capable of restricting setback of a plunger includes a ratchet mechanism that allows setback of the plunger by sliding a ratchet element in a disengaging direction to disengage ratchet teeth from rack teeth when a reaction force acts on the plunger as a result of excessive chain tension. The ratchet element is slidable in a ratchet-receiving hole, and an inclination suppressing structure that prevents the ratchet element from becoming skewed in the ratchet receiving hole to an extent such that its forward end contacts one side of the hole while its rearward end contacts the opposite sides of the hole.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: May 27, 2014
    Assignee: Tsubakimoto Chain Co.
    Inventors: Akira Ishii, Munehiro Maeda, Osamu Yoshida, Yuji Kurematsu
  • Publication number: 20140126154
    Abstract: A power converter includes an inverter in an inverter case, and a DC/DC converter in a converter case detachably fixed to the inverter case. The inverter includes power semiconductor modules, and the DC/DC converter includes a down-converter circuit and/or a boost converter circuit. The inverter case includes first and second path-forming members thermally contacting the converter case. In the first path-forming member, the power semiconductor module is inserted into a first coolant path. In the second path-forming member, the power semiconductor module inserted into the second coolant path, which is parallel to the first coolant path. The DC/DC converter includes an inductance device, and a switching device board on which a switching device con rolling electric current in the inductance device is mounted. The inductance and switching devices are in an area of the converter case thermally contacting first and second path forming members.
    Type: Application
    Filed: July 9, 2012
    Publication date: May 8, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Katsuhiro Higuchi, Akira Ishii, Hidenori Shinohara
  • Patent number: 8688130
    Abstract: A disclosed base station includes a communication unit configured to receive from a mobile station a first report signal including base station specification information specifying a base station, reception quality information indicating reception quality of a signal received from the specified base station, and change request information requesting to change communication quality between the mobile station and the specified base station; and an automatic area control unit configured to determine whether the base station is specified by the base station specification information, to obtain location information indicating the location of the mobile station if the base station is specified by the base station specification information, and to change at least one base station parameter based on the reception quality information and the location information to change the reception quality at the location of the mobile station.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 1, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yuki Inoue, Keizo Cho, Shinichi Mori, Hiroyuki Hosono, Akira Ishii, Kei Igarashi
  • Patent number: 8672356
    Abstract: An engagement fixture of a shoulder belt is connected to and supported by an engagement buckle disposed in a vehicle interior. When a platform is positioned in a getting in/out position in a vehicle exterior, the engagement fixture of the shoulder belt can be temporarily connected to a temporary fastening fixture provided to the platform. To the contrary, when the platform is positioned in a loading position in a vehicle interior, a connection condition of the engagement fixture of the shoulder belt can be changed from a temporary connection of the fastening fixture to a securely supportable connection of an engagement buckle in the vehicle interior. Thus, it is possible to simplify a belt attaching operation after a wheelchair is loaded in a vehicle while a columnar support member used in the conventional platform is abolished.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: March 18, 2014
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Yukio Inaguma, Kenji Horiguchi, Akira Ishii, Fumiaki Katou, Masaaki Yamane