Patents by Inventor Tadashi Satoh

Tadashi Satoh 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: 10372009
    Abstract: The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: August 6, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoko Teranishi, Hiroyuki Moriwaki, Eiji Satoh, Tadashi Ohtake, Hidefumi Yoshida, Satoshi Matsumura
  • Patent number: 8625158
    Abstract: A disclosed image forming apparatus for color printing includes a generator unit configured to generate dot sequential data as printing data based on received PDL color data, an image adjustment-conversion unit configured to carry out image adjustment processing and/or image conversion processing on the printing data generated by the generator unit based on a set printing condition, a rendering unit configured to render the printing data held in a page memory on which the image adjustment processing and/or the image conversion processing has been carried out by the image adjustment-conversion unit, and a printing unit configured to print the printing data rendered by the rendering unit.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: January 7, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Satoh, Yusuke Kudo
  • Patent number: 8523347
    Abstract: Disclosed is a sheet conveyance device installed in an image forming apparatus having an image forming part that forms an image on a sheet member. The sheet conveyance device includes an ejecting/inverting path functioning not only as an ejecting path through which the sheet member having the image formed thereon by the image forming section is ejected outside the image forming apparatus but also as an inverting path through which the sheet member having the image formed thereon is conveyed with front and rear sides thereof inverted in a direction opposite to an ejecting direction; and an inverted-sheet directly ejecting path through which the sheet member with the front and rear sides thereof inverted in the ejecting/inverting path is ejected outside the image forming apparatus without passing through the image forming part.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: September 3, 2013
    Assignee: Ricoh Company, Ltd.
    Inventor: Tadashi Satoh
  • Publication number: 20110205564
    Abstract: A disclosed image forming apparatus for color printing includes a generator unit configured to generate dot sequential data as printing data based on received PDL color data, an image adjustment-conversion unit configured to carry out image adjustment processing and/or image conversion processing on the printing data generated by the generator unit based on a set printing condition, a rendering unit configured to render the printing data held in a page memory on which the image adjustment processing and/or the image conversion processing has been carried out by the image adjustment-conversion unit, and a printing unit configured to print the printing data rendered by the rendering unit.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 25, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Tadashi Satoh, Yusuke Kudo
  • Publication number: 20110205323
    Abstract: Disclosed is a sheet conveyance device installed in an image forming apparatus having an image forming part that forms an image on a sheet member. The sheet conveyance device includes an ejecting/inverting path functioning not only as an ejecting path through which the sheet member having the image formed thereon by the image forming section is ejected outside the image forming apparatus but also as an inverting path through which the sheet member having the image formed thereon is conveyed with front and rear sides thereof inverted in a direction opposite to an ejecting direction; and an inverted-sheet directly ejecting path through which the sheet member with the front and rear sides thereof inverted in the ejecting/inverting path is ejected outside the image forming apparatus without passing through the image forming part.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 25, 2011
    Applicant: Ricoh Company, Ltd.
    Inventor: Tadashi Satoh
  • Patent number: 6878347
    Abstract: An exhaust gas purification system of an internal combustion engine having a bypass exhaust gas passage, openable through a switch-over valve, branched from an exhaust pipe at a location downstream of a catalytic converter and again merged into the exhaust pipe at a downstream point, an adsorbent installed in the bypass exhaust gas passage which adsorbs unburned component of the exhaust gas, and an EGR pipe which recirculates the exhaust gas including the unburned components at a location upstream of the catalytic converter, wherein the EGR pipe is made of metal such as stainless steel and is connected to the bypass exhaust gas passage such that the recirculation pipe is brought into thermal contact with the exhaust pipe, thereby enabling to effectively prevent blocking or corrosion of the EGR pipe or switch-over valve from occurring. The inner wall of the recirculation pipe is formed with liquid repellent and oil repellent film so as to overcome moisture-related problems more effectively.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: April 12, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Haga, Tadashi Satoh, Hideharu Yamazaki, Takuji Yamamoto
  • Patent number: 6449944
    Abstract: A first exhaust gas sensor 5 (air-fuel ratio sensor) and a second exhaust gas sensor 6 (O2 sensor) are disposed respectively upstream and downstream of a catalytic converter. An exhaust system E which ranges from the exhaust gas sensor 5 to the exhaust gas sensor 6 and includes the catalytic converter 3 is regarded as an object exhaust system E, and a behavior of the object exhaust system E is modeled. When an internal combustion engine 1 is in operation, parameters to be set of the model of the object exhaust system E are sequentially identified based on the data of outputs of the exhaust gas sensors 5, 6. A deteriorated state of the catalytic converter 3 is determined based on the data of the identified values.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: September 17, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Yoshihisa Iwaki, Tadashi Satoh, Masaki Ueno
  • Patent number: 6401451
    Abstract: A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage branched from an exhaust pipe of the engine, which is opened by a switch-over valve at starting of the engine to introduce the exhaust gas such that the adsorbent adsorbs unburned HC in exhaust gas generated by the engine and is closed such that the adsorbent desorbs the adsorbed HC and the desorbed HC is thereafter recirculated at a position upstream of a catalyst. Based on the fact, due to the adsorption effect, the HC concentration at a downstream point is lower than that at an upstream point, in the system, the concentration of the HC introduced in the bypass exhaust gas passage in the adsorption mode is detected and compared with a threshold value and the degradation of the adsorbent is discriminated, thereby enabling to improve the discrimination accurately.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: June 11, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Yushihisa Iwaki, Tadashi Satoh, Masahiro Satoh
  • Patent number: 6389804
    Abstract: A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage branched from an exhaust pipe of the engine, which is opened by a switch-over valve at starting of the engine to introduce the exhaust gas such that the adsorbent adsorbs unburned HC in exhaust gas generated by the engine and is closed such that the adsorbent desorbs the adsorbed HC and the desorbed HC is thereafter recirculated at a position upstream of a catalyst. Based on the fact that the HC concentration rising time interval becomes short as the adsorbent degrades and adsorption capacity decrease, the time lapse since engine starting until the detected HC concentration exceeds a predetermined level is measured and is compared with a threshold value such that the adsorbent is discriminated to be degraded if the measured time lapse is less than the threshold value, thereby enabling to improve the discrimination accurately.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: May 21, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Yoshihisa Iwaki, Tadashi Satoh, Masahiro Satoh
  • Patent number: 6354076
    Abstract: A system for purifying exhaust gas generated by an internal combustion engine having an adsorbent, installed in an exhaust system of the engine, which adsorbs unburned components of the exhaust gas such as hydrocarbons generated by the engine. The system has a first temperature sensor for detecting a temperature of the adsorbent and timer for measuring a time until the detected temperature becomes greater or equal to a predetermined value, when the measured time is less than a threshold value, it is discriminated that the adsorbent deteriorates. With this, the deterioration of the adsorbent can be discriminated accurately.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: March 12, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Tadashi Satoh, Yoshihisa Iwaki, Masaki Ueno, Takashi Haga, Tetsuo Endo
  • Patent number: 6286306
    Abstract: A system for purifying exhaust gas generated by an internal combustion engine having a bypass exhaust gas passage branching from an exhaust pipe which is opened or closed by a switch-over valve, and an adsorbent which adsorbs unburneds component in the exhaust gas installed at the bypass exhaust passage. In the system, when the engine operation is within a high engine speed and high load region, the switch-over valve is operated to open the bypass exhaust gas passage to reduce noise due to switch-over valve chattering, etc. Similarly, the bypass exhaust gas passage is opened at that range, when the exhaust gas temperature is greater or equal to a predetermined value, to introduce high temperature exhaust gas to burn away cloggy material adhered to the adsorbent which would otherwise deteriorate or degrade the adsorbent.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: September 11, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shiro Takakura, Yuji Yasui, Tadashi Satoh, Yoshihisa Iwaki, Masaki Ueno, Masahiro Sato
  • Publication number: 20010008616
    Abstract: An exhaust gas purification system of an internal combustion engine having a bypass exhaust gas passage, openable through a switch-over valve, branched from an exhaust pipe at a location downstream of a catalytic converter and again merged into the exhaust pipe at a downstream point, an adsorbent installed in the bypass exhaust gas passage which adsorbs unburned component of the exhaust gas, and an EGR pipe which recirculates the exhaust gas including the unburned components at a location upstream of the catalytic converter, wherein the EGR pipe is made of metal such as stainless steel and is connected to the bypass exhaust gas passage such that the recirculation pipe is brought into thermal contact with the exhaust pipe, thereby enabling to effectively prevent blocking or corrosion of the EGR pipe or switch-over valve from occurring. The inner wall of the recirculation pipe is formed with liquid repellent and oil repellent film so as to overcome moisture-related problems more effectively.
    Type: Application
    Filed: January 18, 2001
    Publication date: July 19, 2001
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Haga, Tadashi Satoh, Hideharu Yamazaki, Takuji Yamamoto
  • Patent number: 6116213
    Abstract: A control system for controlling an internal combustion engine which discharge exhaust gases through an emission purifier includes a controller which increases the quantity of intake air drawn into the internal combustion engine while the internal combustion engine is idling after the internal combustion engine has started to operate, to a level which is greater by a predetermined increase than the quantity of intake air drawn into the internal combustion engine while the internal combustion engine is idling normally. The controller also generates a command value for ignition timing of the internal combustion engine according to a feedback control process to converge the rotational speed of the internal combustion engine toward a predetermined target rotational speed, and controlling the ignition timing of the internal combustion engine based on the generated command value thereby to retard the ignition timing.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: September 12, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Yoshihisa Iwaki, Tadashi Satoh, Masaki Ueno
  • Patent number: 6078119
    Abstract: An object of the present invention is to provide a bearingless rotary machine which is capable of stably controlling the levitated position of a rotor of an induction motor even if the rotor comprises a squirrel-cage type rotor that is simple in structure and can easily be manufactured.A bearingless rotary machine has a rotor having secondary current paths and a stator spaced from the rotor by a gap. The stator has two kinds of windings for imparting a rotating and a levitating and supporting force to the rotor. The rotary machine has a magnetic field command calculator, magnetic flux distribution detecting means and correcting means for adjusting the detected control magnetic flux distribution to coincide with the magnetic field distribution command.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: June 20, 2000
    Assignee: Ebara Corporation
    Inventors: Tadashi Satoh, Masaru Ohsawa, Satoshi Mori
  • Patent number: 5946906
    Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: September 7, 1999
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shusuke Akazaki, Kohei Hanada, Yuji Yasui, Tadashi Satoh, Takashi Haga
  • Patent number: 4725720
    Abstract: A microscope comprises:a mount for mounting an object, a light source for illuminating the object, an enlarging optical system including a plurality of objectives provided on a revolver, and means for receiving light from the object to enlargingly form an image of the object. An observing optical system includes an ocular lens for observing said image. The microscope further comprises a magnification selecting unit including a driving mechanism for rotating the revolver, and a magnification selection control circuit for automatically positioning said selected objective to the optical axis of the enlarging optical system. An automatic focus adjusting unit includes a focus detector opposed to the observing optical system for discriminating the enlargedly formed image, and a mount moving device for driving the mount to the position of focus in response to an output signal from the focus detector.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: February 16, 1988
    Assignee: Mitutoyo Manufacturing Co., Ltd.
    Inventors: Katsuhide Sawada, Hirohiko Shinonaga, Tadashi Satoh
  • Patent number: 4601856
    Abstract: A method of producing a highly purified oleic acid is disclosed, which comprises the steps of:(a) separating and removing the resulting precipitated crystal after the cooling of a solution of oleic acid containing fatty acid mixture and urea in an organic solvent;(b) separating the resulting crystallized crystal after the partial saponification of the organic solvent solution; and(c) subjecting the crystal to an acid decomposition.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: July 22, 1986
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Masao Suzuki, Kenichi Hashimoto, Tadashi Satoh
  • Patent number: RE42056
    Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: January 25, 2011
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shusuke Akazaki, Kohei Hanada, Yuji Yasui, Tadashi Satoh, Takashi Haga
  • Patent number: RE43588
    Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: August 21, 2012
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shusuke Akazaki, Kohei Hanada, Yuji Yasui, Tadashi Satoh, Takashi Haga