Patents by Inventor Isao Hattori

Isao Hattori 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: 20140373796
    Abstract: A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member.
    Type: Application
    Filed: September 8, 2014
    Publication date: December 25, 2014
    Inventors: Masashi Hayashi, Tomonori Suzuki, Isao Hattori
  • Publication number: 20140360449
    Abstract: A sealing member is supported by a holding surface of a vane rotor and slides on a sealing surface formed by an inner surface of a housing rotor, so as to seal an advancing chamber and a retarding chamber from each other. The sealing member has a pressure-receiving surface and a diffuser surface. The pressure-receiving surface receives pressure of working fluid from a working chamber in a direction to the sealing surface. The diffuser surface forms a sealing gap between the diffuser surface and the sealing surface, so that the sealing surface becomes larger as the sealing surface is more separated from the working chamber in a circumferential direction. The sealing member has a deformable portion forming the pressure-receiving surface and the diffuser surface. The deformable portion is elastically deformed, so that the diffuser surface is more strongly pushed to the sealing surface, when the pressure of the working fluid is increased.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 11, 2014
    Inventors: Masashi HAYASHI, Haruhisa SHIBATA, Isao HATTORI
  • Patent number: 8904980
    Abstract: A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: December 9, 2014
    Assignee: Denso Corporation
    Inventors: Masashi Hayashi, Tomonori Suzuki, Isao Hattori
  • Publication number: 20140106266
    Abstract: The present invention is to provide a mask blank enabling fabrication of a photomask having a structure where electrostatic breakdown is effectively prevented. To accomplish the object, the invention discloses a mask blank comprising a mask substrate, an electrostatic breakdown prevention film fully covering one side of the mask substrate, and a shading film formed on the electrostatic breakdown prevention film. The electrostatic breakdown prevention film is made of titanium, tantalum, titanium compound or tantalum compound. The transparent rate of the electrostatic breakdown prevention film is not less than 75%, for the wavelength of light in an exposure. The sheet resistance of the electrostatic discharge prevention film is not more than 100K?/?.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Applicant: CLEAN SURFACE TECHNOLOGY CO.
    Inventor: Isao Hattori
  • Publication number: 20140090612
    Abstract: A resin member may include a first side wall, which is placed between a first housing and a laminated body, and a second side wall, which is placed between a second housing and the laminated body. A vane rotor may include a pressing oil passage that is configured to guide hydraulic oil to a first seal member and a second seal member to exert a pressing force, which radially outwardly and axially urge the first seal member and the second seal member.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 3, 2014
    Applicant: Denso Corporation
    Inventors: Masashi HAYASHI, Tomonori Suzuki, Isao Hattori
  • Publication number: 20140007645
    Abstract: A detecting unit outputs an object signal corresponding to an inertial force. A first environment value is obtained at a first time point. A second environment value is obtained at a second time point. An environment difference value which is a difference between the first and second environment values is calculated. An environment change detection signal is output when an absolute value of the environment difference value is larger than a predetermined determination threshold. A first averaged signal is output by averaging a corrected signal in a predetermined period continuing to the first time point. A second averaging signal is output by averaging the corrected signal in a predetermined period continuing to the second time point. An offset difference value is stored when the environment change detection signal is output. The corrected signal is generated by adding the stored offset difference value to the object signal.
    Type: Application
    Filed: April 26, 2012
    Publication date: January 9, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Takeshi Uemura, Isao Hattori
  • Publication number: 20130233046
    Abstract: An inertial force sensor of the present invention includes a detection element, a detection circuit for detecting the amount of inertia corresponding to the inertial force applied to the detection element; a first low-pass filter connected to the output side of the detection circuit; and a correction circuit for correcting the output of the first low-pass filter. The correction circuit includes a correction amount generation unit connected to the output side of the first low-pass filter; a correction amount storage unit connected to the output side of the correction amount generation unit; and a correction unit to connected to the output side of the first low-pass filter and to the output side of the correction amount storage unit. The correction unit corrects an output value of the first low-pass filter based on a correction amount stored in the correction amount storage unit.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 12, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takeshi Sasaki, Takeshi Uemura, Isao Hattori, Takashi Kawai
  • Patent number: 8327708
    Abstract: An acceleration sensor includes a driver circuit for outputting a biased alternating-current (AC) voltage having a variable bias voltage, a detector element having a capacitance provided between a fixed electrode and a movable electrode changing depending on acceleration applied to the detector element, a current-voltage (C/V) converter for converting a current output from the movable electrode of the detector element into a voltage and outputting the voltage, a first operational amplifier outputting a voltage depending on the input voltage, a synchronous demodulator for synchronously detecting the voltage output from the first operational amplifier, and a defect detector for outputting a defect detection signal when the defect detector determines that the voltage output from the first operational amplifier is out of a predetermined range while the biased AC voltage output from the driver circuit is a predetermined voltage. This acceleration sensor can have a small size.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: December 11, 2012
    Assignee: Panasonic Corporation
    Inventors: Isao Hattori, Toshiyuki Nozoe
  • Publication number: 20120125102
    Abstract: An acceleration sensor includes a driver circuit for outputting a biased alternating-current (AC) voltage having a variable bias voltage, a detector element having a capacitance provided between a fixed electrode and a movable electrode changing depending on acceleration applied to the detector element, a current-voltage (C/V) converter for converting a current output from the movable electrode of the detector element into a voltage and outputting the voltage, a first operational amplifier outputting a voltage depending on the input voltage, a synchronous demodulator for synchronously detecting the voltage output from the first operational amplifier, and a defect detector for outputting a defect detection signal when the defect detector determines that the voltage output from the first operational amplifier is out of a predetermined range while the biased AC voltage output from the driver circuit is a predetermined voltage. This acceleration sensor can have a small size.
    Type: Application
    Filed: April 1, 2009
    Publication date: May 24, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Isao Hattori, Toshiyuki Nozoe
  • Patent number: 7946265
    Abstract: A supply control apparatus controls advancing supply, which is supply of working fluid to advancing chambers, and retarding supply, which is supply of the working fluid to retarding chambers. The supply control apparatus alternately and repeatedly executes the advancing supply and the retarding supply in such a manner that a rotational torque, which drives a camshaft, changes at a phase of cycle that is opposite from a phase of cycle of a variable torque, which changes with time and is applied to the camshaft, at time of limiting a phase of the camshaft relative to a crankshaft within a target phase range.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: May 24, 2011
    Assignee: Denso Corporation
    Inventor: Isao Hattori
  • Publication number: 20090020085
    Abstract: A control apparatus controls supply of working fluid to advancing chambers and retarding chambers. The control apparatus alternately and repeatedly implements an advancing supply period, during which the working fluid is supplied to the advancing chambers, and a retarding supply period, during which the working fluid is supplied to the retarding chambers, at time of limiting a phase of a camshaft relative to a crankshaft within a target phase range.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 22, 2009
    Applicant: DENSO CORPORATION
    Inventor: Isao Hattori
  • Publication number: 20090020086
    Abstract: A supply control apparatus controls advancing supply, which is supply of working fluid to advancing chambers, and retarding supply, which is supply of the working fluid to retarding chambers. The supply control apparatus alternately and repeatedly executes the advancing supply and the retarding supply in such a manner that a rotational torque, which drives a camshaft, changes at a phase of cycle that is opposite from a phase of cycle of a variable torque, which changes with time and is applied to the camshaft, at time of limiting a phase of the camshaft relative to a crankshaft within a target phase range.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 22, 2009
    Applicant: DENSO CORPORATION
    Inventor: Isao Hattori
  • Patent number: 6695284
    Abstract: An electromagnetic valve apparatus prevents fluid leakage and contains a stationary core having a shape of a bottomed, single-piece cup constructed by combining a housing portion, an attracting portion, a thin-walled portion that joins the housing portion and the attracting portion, and a flange portion. The housing portion has a closed bottom portion, and the attracting portion is adjacent an open end of the stationary core. The housing portion reciprocally supports a movable core. The thin-walled portion is a magnetic resistance portion for preventing leakage of magnetic flux. A magnetic cylindrical attracting member is press-inserted in the inner wall of the attracting portion located on the opened side of the stationary core. The attracting member is arranged face to face with the movable core in the reciprocating path of the movable core. Upon energizing a coil, a magnetic attractive force attracts the movable core to the attracting member.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: February 24, 2004
    Assignee: Denso Corporation
    Inventors: Eiji Isobe, Isao Hattori
  • Publication number: 20030075702
    Abstract: An electromagnetic valve apparatus prevents fluid leakage and contains a stationary core having a shape of a bottomed, single-piece cup constructed by combining a housing portion, an attracting portion, a thin-walled portion that joins the housing portion and the attracting portion, and a flange portion. The housing portion has a closed bottom portion, and the attracting portion is adjacent an open end of the stationary core. The housing portion reciprocally supports a movable core. The thin-walled portion is a magnetic resistance portion for preventing leakage of magnetic flux. A magnetic cylindrical attracting member is press-inserted in the inner wall of the attracting portion located on the opened side of the stationary core. The attracting member is arranged face to face with the movable core in the reciprocating path of the movable core. Upon energizing a coil, a magnetic attractive force attracts the movable core to the attracting member.
    Type: Application
    Filed: October 7, 2002
    Publication date: April 24, 2003
    Inventors: Eiji Isobe, Isao Hattori
  • Patent number: 6378475
    Abstract: A spool is moved by controlling the amount of electric current supplied to a linear solenoid of a changeover valve, and selects any one of valve sections. The state of communication between fluid passages connected to the changeover valve is determined by the valve section and selected. With the selection of the valve section, the hydraulic fluid is discharged from the advance oil pressure chamber while being supplied to the advance oil pressure chamber, and also is discharged from the retard oil pressure chamber. The oil pressure in the advance oil pressure chamber remains low even when the oil is filled in the advance oil pressure chamber.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: April 30, 2002
    Assignee: Densco Corporation
    Inventors: Akihiko Takenaka, Isao Hattori, Michio Adachi
  • Publication number: 20010052330
    Abstract: A spool is moved by controlling the amount of electric current supplied to a linear solenoid of a changeover valve, and selects any one of valve sections. The state of communication between fluid passages connected to the changeover valve is determined by the valve section and selected. With the selection of the valve section, the hydraulic fluid is discharged from the advance oil pressure chamber while being supplied to the advance oil pressure chamber, and also is discharged from the retard oil pressure chamber. The oil pressure in the advance oil pressure chamber remains low even when the oil is filled in the advance oil pressure chamber.
    Type: Application
    Filed: June 7, 2001
    Publication date: December 20, 2001
    Inventors: Akihiko Takenaka, Isao Hattori, Michio Adachi
  • Patent number: 6029704
    Abstract: An electromagnetic control valve is composed of a spool section for switching fluid passages on or off, a solenoid section for driving the spool in one direction, a magnetic moving core slidably disposed in the stator, a nonmagnetic shaft fixed to the moving core, and a spring member for biasing the spool in the direction opposite to the one direction. The spool section includes a spool and a sleeve. The solenoid section is connected to the spool section and includes a cylindrical magnetic stator, cylindrical magnetic yoke disposed to surround the stator and a magnetic coil disposed between the stator and the yoke. The stator is fixed to the sleeve at one end and having a bottom at the other end thereof. The shaft has one end to be in contact with the end of the sleeve thereby positioning the moving core in a longitudinal direction in the stator.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: February 29, 2000
    Assignee: Denso Corporation
    Inventors: Koji Kuroda, Isao Hattori, Hiroshi Numata, Yoshitsugu Kida
  • Patent number: 5343841
    Abstract: The present invention provides an intake control valve which is able to reduce intake air leakage, control the amount of intake air with high accuracy, and to allow easy installation to an intake manifold. The intake control valve of an intake control device according to the present invention has a valve body, a case, and an actuator. The valve body is rotatably installed in the case, opening and closing an openingclosing passage formed in the case. The case is fitted with the actuator, which functions to rotate the valve body. In the meantime, the intake manifold is provided for a mounting bore formed for insertion of the case. On the outer side of the case are installed sealing members, which contact the wall surface of the mounting bore to prevent air leakage. The intake control valve is installed in the mounting bore formed in the intake manifold after assembling the valve body, the case and the actuator into one unit.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: September 6, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Isao Hattori, Yurio Nomura, Shigeo Nomura, Tokio Kohama
  • Patent number: 5008509
    Abstract: A method of making a honeycomb die by using an electrode with parallel grooves in an electrical discharge machining process. The parallel grooves in the electrode are formed by a grinding wheel having a reverse tapered shape. The grinding wheel is progressively dressed during cutting of the parallel grooves.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: April 16, 1991
    Assignees: NGK Insulators, Ltd., Institute of Technology Precision Electrical Discharge Works
    Inventors: Isao Hattori, Shoji Futamura
  • Patent number: 4835044
    Abstract: A ceramic honeycomb structural body having a plurality of through-holes surrounded by partition walls wherein, the partition wall thickness in at least a central portion of the structural body at a section perpendicular to the through-hole is thinned stepwise from a crossing segment of the partition wall up to a middle segment thereof.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: May 30, 1989
    Assignee: NGK Insulators, Ltd.
    Inventors: Isao Hattori, Koichi Ikeshima