Patents by Inventor Hitoshi Satou

Hitoshi Satou 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: 20200352793
    Abstract: In a method and device for manufacturing an absorbent material, the degree of freedom in design can be increased by expanding a modifiable distribution pattern of an SAP and broadening the range in which the performance of the absorbent material can be modified. Pulverized pulp is suctioned in a predetermined pattern to form a pulp layer in which the pulp is fiber-laminated. A first distribution opening through which a first distribution device discharges a first SAP and a second distribution opening through which a second distribution opening discharges a second SAP are provided facing the pulp layer, and the first and second SAPs are distributed onto the pulp layer through the first and second distribution openings while moving the pulp layer relative to the first and second distribution openings. The first and second distribution devices can control the discharge amounts of the first SAP and the second SAP, respectively.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 12, 2020
    Inventor: Hitoshi SATOU
  • Patent number: 9181829
    Abstract: An exhaust gas purification device includes an exhaust gas after-treatment device provided in an exhaust passage of an internal combustion engine, and has an oxidation catalyst and a DPF or diesel particulate filter. The exhaust gas purification device also includes an exhaust pipe injector which feeds a fuel to the oxidation catalyst, and a control unit which controls regeneration of the filter by supplying the oxidation catalyst with the fuel from the exhaust pipe injector. The control unit determines whether the filter is in a regeneration-possible state, i.e., whether the oxidation catalyst is maintained at a high temperature allowing regeneration of the filter. If the control unit determines during regeneration control of the filter that the filter is not in the regeneration-possible state, then the control unit halts the regeneration control until the regeneration-possible state is reached.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: November 10, 2015
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Hiroshi Kubo, Takao Onodera, Hitoshi Satou, Masahiro Kajiyama, Tetsuya Murata, Kenzou Yaginuma, Hiroyuki Ishikawa
  • Patent number: 9086000
    Abstract: A diesel particulate filter (“DPF”) system that suppresses clogging of a DPF and enhances convenience including accumulated particulate matter (“PM”) quantity estimator for estimating an accumulated PM quantity in an idle state; and a long low idle forced regeneration unit 5 that if the accumulated PM quantity estimated by the accumulated PM quantity estimation estimator exceeds a predetermined quantity, performs long low idle forced regeneration that automatically performs regeneration of the DPF, and the long low idle forced regeneration unit, when a vehicle starts moving during long low idle forced regeneration, performs automatic regeneration of the diesel particulate filter while the vehicle is moving.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 21, 2015
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Hitoshi Satou, Hiroyuki Ishikawa, Takashi Haseyama
  • Patent number: 9034065
    Abstract: A diesel particulate defuser (DPD) for collecting particulate matter (PM) in exhaust gas is connected to an exhaust pipe of a diesel engine, and when the amount of PM in the DPD becomes equal to or greater than a predetermined amount, the exhaust gas temperature of the diesel engine is increased by performing exhaust pipe injection and DPD is automatically regenerated. In such an exhaust gas purification system, an exhaust gas temperature during DPD regeneration in automatic regeneration is detected, a difference between the detected exhaust gas temperature and a target regeneration temperature is determined, and in a case where an exhaust pipe injection amount is PID controlled based on the difference, when a transition is made from the traveling automatic regeneration to the idle automatic regeneration conducted during a stop, an integral control term in the PID control is reset to zero to control the exhaust pipe injection amount.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: May 19, 2015
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Takashi Ikeda, Tetsuya Asami, Hitoshi Satou
  • Patent number: 8978363
    Abstract: A diesel particulate filter (“DPF”) system that is more convenient than a conventional DPF system, including a DPF having a catalyzed soot filter (“CSF”) that is connected to an exhaust pipe of a diesel engine in order to collect particulate matter (“PM”) in exhaust gas, and a diesel oxidation catalyst (“DOC”) provided on an upstream side of the CSF; and temperature sensors provided respectively on an upstream side and a downstream side of the DOC. When a PM accumulation amount in the CSF exceeds a fixed amount, DPF regeneration is performed by setting a temperature detected by the upstream side temperature sensor at or above a first threshold and setting a temperature detected by the downstream side temperature sensor at or above a second threshold. When a breakdown is detected in the upstream side temperature sensor, the second threshold is modified upward.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 17, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Naofumi Ochi, Hitoshi Satou
  • Publication number: 20140290223
    Abstract: An exhaust gas purification device includes an exhaust gas after-treatment device provided in an exhaust passage of an internal combustion engine, and has an oxidation catalyst and a DPF or diesel particulate filter. The exhaust gas purification device also includes an exhaust pipe injector which feeds a fuel to the oxidation catalyst, and a control unit which controls regeneration of the filter by supplying the oxidation catalyst with the fuel from the exhaust pipe injector. The control unit determines whether the filter is in a regeneration-possible state, i.e., whether the oxidation catalyst is maintained at a high temperature allowing regeneration of the filter. If the control unit determines during regeneration control of the filter that the filter is not in the regeneration-possible state, then the control unit halts the regeneration control until the regeneration-possible state is reached.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 2, 2014
    Inventors: Hiroshi Kubo, Takao Onodera, Hitoshi Satou, Masahiro Kajiyama, Tetsuya Murata, Kenzou Yaginuma, Hiroyuki Ishikawa
  • Patent number: 8669002
    Abstract: To provide a thermoplastic resin microporous film being difficult in longitudinal tearing and excellent in tear resistance; a microporous film comprising a thermoplastic resin, wherein a melt flow rate of the thermoplastic resin in the microporous film is in the range of 0.1 to 2.0 g/10 min, tensile strength in a cross-machine direction is in the range of 5 to 10 MPa and tensile elongation in the cross-machine direction is 300% or more.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 11, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Yamamoto, Hitoshi Satou, Kazuyuki Fukudome
  • Patent number: 8646254
    Abstract: Forced regeneration start timing of a diesel particulate filter for purifying particulate matter in exhaust gas is judged based on a comparison of a differential pressure across the diesel particulate filter with a predetermined differential pressure threshold across the filter. The predetermined differential pressure threshold is set by multiplying a reference differential pressure threshold by a coefficient which varies stepwise or continuously depending on a mileage of a vehicle after previous forced regeneration. Consequently, particulate matter can be removed by burning while the amount of particulate matter accumulated unevenly in the filter is still small, and excessive temperature rise in the filter resulting from excessive accumulation of particulate matter during forced regeneration and melting-loss of the filter due to excessive temperature rise can be prevented.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: February 11, 2014
    Assignee: Isuzu Motors Limited
    Inventors: Takao Onodera, Akira Hirata, Takashi Haseyama, Shinji Gotou, Hitoshi Satou, Tatsuo Mashiko, Futoshi Nakano, Kouichirou Yomogida
  • Patent number: 8453432
    Abstract: An exhaust emission purification system having a controller performing exhaust temperature rise control including multistage delay injection control for raising the exhaust temperature, if the exhaust gas temperature is lower than a predetermined judgment temperature, and performing particulate matter combustion removal control including post injection control, if the exhaust gas temperature becomes equal to or higher than the predetermined judgment temperature, when forced regeneration of a diesel particulate filter is carried out. The multistage delay injection control is forbidden when an idle operation state of an internal combustion engine occurs for a predetermined judgment time and a power take-off device is operating.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: June 4, 2013
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Haseyama, Akihiro Inamura, Shinji Gotou, Hitoshi Satou, Tatsuo Mashiko, Akira Hirata, Noriyuki Tsukamoto, Futoshi Nakano, Kouichirou Yomogida
  • Patent number: 8420178
    Abstract: A liquid sending method comprises the steps of sending a coating solution to a liquid sending pipe, passing the coating solution to an orifice which is provided at a part of the liquid sending pipe to prevent a vibration propagation and passing the coating solution to a pulsation absorb device which is provided at a part of the liquid sending pipe where is located at a downstream of the orifice, wherein the pulsation absorb device includes a first chamber that a liquid can flow in and out, a second chamber which is introduced a gas, and a diaphragm which separates the first chamber and the second chamber.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: April 16, 2013
    Assignee: Fujifilm Corporation
    Inventors: Kenichi Yasuda, Hitoshi Satou, Kazuhiro Oki
  • Publication number: 20130084217
    Abstract: A diesel particulate filter (“DPF”) system that is more convenient than a conventional DPF system, including a DPF having a catalyzed soot filter (“CSF”) that is connected to an exhaust pipe of a diesel engine in order to collect particulate matter (“PM”) in exhaust gas, and a diesel oxidation catalyst (“DOC”) provided on an upstream side of the CSF; and temperature sensors provided respectively on an upstream side and a downstream side of the DOC. When a PM accumulation amount in the CSF exceeds a fixed amount, DPF regeneration is performed by setting a temperature detected by the upstream side temperature sensor at or above a first threshold and setting a temperature detected by the downstream side temperature sensor at or above a second threshold. When a breakdown is detected in the upstream side temperature sensor, the second threshold is modified upward.
    Type: Application
    Filed: June 10, 2011
    Publication date: April 4, 2013
    Applicant: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Naofumi Ochi, Hitoshi Satou
  • Publication number: 20130081367
    Abstract: A diesel particulate defuser (DPD) for collecting particulate matter (PM) in exhaust gas is connected to an exhaust pipe of a diesel engine, and when the amount of PM in the DPD becomes equal to or greater than a predetermined amount, the exhaust gas temperature of the diesel engine is increased by performing exhaust pipe injection and DPD is automatically regenerated. In such an exhaust gas purification system, an exhaust gas temperature during DPD regeneration in automatic regeneration is detected, a difference between the detected exhaust gas temperature and a target regeneration temperature is determined, and in a case where an exhaust pipe injection amount is PID controlled based on the difference, when a transition is made from the traveling automatic regeneration to the idle automatic regeneration conducted during a stop, an integral control term in the PID control is reset to zero to control the exhaust pipe injection amount.
    Type: Application
    Filed: June 10, 2011
    Publication date: April 4, 2013
    Applicant: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Tetsuya Asami, Hitoshi Satou
  • Publication number: 20130061580
    Abstract: A diesel particulate filter (“DPF”) system that suppresses clogging of a DPF and enhances convenience including accumulated particulate matter (“PM”) quantity estimator for estimating an accumulated PM quantity in an idle state; and a long low idle forced regeneration unit 5 that if the accumulated PM quantity estimated by the accumulated PM quantity estimation estimator exceeds a predetermined quantity, performs long low idle forced regeneration that automatically performs regeneration of the DPF, and the long low idle forced regeneration unit, when a vehicle starts moving during long low idle forced regeneration, performs automatic regeneration of the diesel particulate filter while the vehicle is moving.
    Type: Application
    Filed: May 16, 2011
    Publication date: March 14, 2013
    Inventors: Hitoshi Satou, Hiroyuki Ishikawa, Takashi Haseyama
  • Publication number: 20130005845
    Abstract: To provide a thermoplastic resin microporous film being difficult in longitudinal tearing and excellent in tear resistance; a microporous film comprising a thermoplastic resin, wherein a melt flow rate of the thermoplastic resin in the microporous film is in the range of 0.1 to 2.0 g/10 min, tensile strength in a cross-machine direction is in the range of 5 to 10 MPa and tensile elongation in the cross-machine direction is 300% or more.
    Type: Application
    Filed: June 25, 2012
    Publication date: January 3, 2013
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: YASUHIRO YAMAMOTO, HITOSHI SATOU, KAZUYUKI FUKUDOME
  • Patent number: 8316637
    Abstract: In emergency regeneration, i.e., after a judgment is made that purification is insufficient after ending forced regeneration, forced regeneration has expired before completion, or when a pressure difference across a diesel particulate filter exceeds a predetermined first judging pressure difference when traveling distance of a vehicle is shorter than a predetermined distance, an alarm for urging manual regeneration is issued. When manual regeneration is designated thereafter by the vehicle's user, manual regeneration is performed. When predetermined conditions are satisfied before receiving a designation of manual regeneration, automatic regeneration is performed.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: November 27, 2012
    Assignee: Isuzu Motors Limited
    Inventors: Takuro Iwashita, Tetsuya Murata, Hitoshi Satou, Takao Onodera, Tatsuo Mashiko
  • Patent number: 8199964
    Abstract: A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers obtained from a bamboo tree aged one year or older, of which the fibers are finely beaten to an extent of micro-fibrillated form. The diaphragm and the dust cap are also made with a beaten paper containing at least 2 wt % of “A fibers” having stems of no greater than 30 ?m in diameter, and surfaces of the stems are fibrillated into shaggy branches having diameters of 1 ?m or less.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: June 12, 2012
    Assignee: Panasonic Corporation
    Inventors: Kazuyoshi Mimura, Shinya Mizone, Kenichi Ajiki, Masahide Sumiyama, Toru Fujii, Yoshiyuku Takahashi, Nobuo Nakamura, Toshihiro Shimizu, Hitoshi Satou
  • Patent number: 7845165
    Abstract: An exhaust emission control system including a continuous regenerating diesel particulate filter (“DPF”) and a DPF controller, wherein a forced regenerator is operated by a driver's request, when it is judged that a traveling distance, after starting particulate matter collection, detected by a traveling distance detector has reached a predetermined judging traveling distance, even when the DPF controller detects that a collection amount detected by a collection amount detector is smaller than a prescribed judging collection amount. Accordingly, in a continuous regenerating DPF capable of manual regenerating, the number of warnings, such as a blinking regeneration button prompting a manual regeneration, is reduced to relieve a driver of annoyance or inconvenience.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: December 7, 2010
    Assignee: Isuzu Motors Limited
    Inventors: Hitoshi Satou, Takehito Imai, Tatsuo Mashiko, Takao Onodera, Makoto Takeuchi, Mamoru Komine, Nobuyuki Hiraki
  • Publication number: 20100089032
    Abstract: In case of emergency regeneration, i.e. any one of forced regeneration after a judgment is made that purification is insufficient in purification judgment after ending forced regeneration, forced regeneration after time has expired before completing of forced regeneration, or forced regeneration when the pressure difference across a DPF exceeds a predetermined first judging pressure difference under a state where traveling distance of a vehicle is shorter than a predetermined distance for judgment an alarm for urging manual regeneration is issued, and wherein when manual regeneration is designated thereafter manual regeneration is performed and when predetermined conditions are satisfied without the reception of a designation of manual regeneration, automatic regeneration is performed.
    Type: Application
    Filed: January 15, 2008
    Publication date: April 15, 2010
    Applicant: Isuzu Motors Limited
    Inventors: Takuro Iwashita, Tetsuya Murata, Hitoshi Satou, Takao Onodera, Tatsuo Mashiko
  • Publication number: 20100075030
    Abstract: A liquid sending method comprises the steps of sending a coating solution to a liquid sending pipe, passing the coating solution to an orifice which is provided at a part of the liquid sending pipe to prevent a vibration propagation and passing the coating solution to a pulsation absorb device which is provided at a part of the liquid sending pipe where is located at a downstream of the orifice, wherein the pulsation absorb device includes a first chamber that a liquid can flow in and out, a second chamber which is introduced a gas, and a diaphragm which separates the first chamber and the second chamber.
    Type: Application
    Filed: September 22, 2009
    Publication date: March 25, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Kenichi Yasuda, Hitoshi Satou, Kazuhiro Oki
  • Publication number: 20100012105
    Abstract: An exhaust emission purification system including a controller performing exhaust temperature rise control executing multistage delay injection control for raising the exhaust temperature, if the exhaust gas temperature is lower than a predetermined judgment temperature, and performing particulate matter combustion removal control executing post injection control, if the exhaust gas temperature becomes equal to or higher than the predetermined judgment temperature, when forced regeneration of a diesel particulate filter is carried out. Multistage delay injection control is forbidden when an idle operation state of an internal combustion engine is sustained for a predetermined judgment time and a power take-off is in operating state. The diesel particulate filter is thereby kept in a good state in a vehicle equipped for purifying particulate matter in exhaust gas by executing forced regeneration while avoiding variation in engine speed.
    Type: Application
    Filed: December 19, 2007
    Publication date: January 21, 2010
    Applicant: ISUZU MOTORS LIMITED
    Inventors: Takashi Haseyama, Akihiro Inamura, Shinji Gotou, Hitoshi Satou, Tatsuo Mashiko, Akira Hirata, Noriyuki Tsukamoto, Futoshi Nakano, Kouichirou Yomogida