Patents by Inventor Takeshi Ashizawa

Takeshi Ashizawa 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: 10837381
    Abstract: In the start control, the first and second discharge actions of the ignition apparatuses are controlled. The first discharge action is performed to ignite the mixed gas in the multiple cylinders. The second discharge action is performed to generate the ozone. The first discharge action is performed immediately after the start of the cranking. The first discharge action is performed in the cylinders which belongs to the first and second cylinder groups. The second discharge action is performed before the start of the cranking. The second discharge action is performed in at least one cylinder which belongs to the second cylinder group. The multiple cylinders belong to the first or second cylinder group. The multiple cylinders are classified into the first or second cylinder group based on the crank angle section SCA set for each cylinder.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: November 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Ashizawa
  • Patent number: 10823026
    Abstract: At the start of the engine, when the temperature of the catalyst is less than the activation temperature, control for activating the catalyst (i.e., activation control) is performed. In the activation control, the first and second discharge actions of the ignition apparatuses are controlled. The first discharge action is performed to ignite the mixed gas in the cylinder. The second discharge action is performed to generate ozone. The first discharge action is performed immediately after the start of the cranking. The first discharge action is performed in the crank angle section at the retard side rather than the compression TDC. The first discharge action is performed in every cylinder. The second discharge action is performed before the start of the cranking. The second discharge action is performed in the other cylinder except for the initial combustion cylinder.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Ashizawa
  • Patent number: 10800937
    Abstract: The present invention relates to [1] a process for producing a pigment water dispersion, including step 1 of mixing a water dispersion (A) formed by dispersing a pigment (I) with a water-dispersible polymer and a water dispersion (B) of a self-dispersible pigment (II) to obtain a water dispersion (C); and step 2 of subjecting the water dispersion (C) obtained in the step 1 to heat treatment at a temperature of not lower than 40° C. to obtain the pigment water dispersion, and [2] a pigment water dispersion containing a pigment (I) dispersed with a water-dispersible polymer and a self-dispersible pigment (II), in which the water-dispersible polymer is adsorbed onto the pigment (I) and the self-dispersible pigment (II).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: October 13, 2020
    Assignee: KAO CORPORATION
    Inventors: Satoshi Tanaka, Takeshi Ashizawa, Teruyuki Fukuda
  • Patent number: 10759956
    Abstract: The present invention relates to [1] a process for producing a pigment water dispersion, including step 1 of mixing a water dispersion (A) formed by dispersing a pigment (I) with a water-dispersible polymer and a water dispersion (B) of a self-dispersible pigment (II) to obtain a water dispersion (C); and step 2 of subjecting the water dispersion (C) obtained in the step 1 to heat treatment at a temperature of not lower than 40° C. to obtain the pigment water dispersion, and [2] a pigment water dispersion containing a pigment (I) dispersed with a water-dispersible polymer and a self-dispersible pigment (II), in which the water-dispersible polymer is adsorbed onto the pigment (I) and the self-dispersible pigment (II).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 1, 2020
    Assignee: KAO CORPORATION
    Inventors: Satoshi Tanaka, Takeshi Ashizawa, Teruyuki Fukuda
  • Publication number: 20200132006
    Abstract: In the start control, the first and second discharge actions of the ignition apparatuses are controlled. The first discharge action is performed to ignite the mixed gas in the multiple cylinders. The second discharge action is performed to generate the ozone. The first discharge action is performed immediately after the start of the cranking. The first discharge action is performed in the cylinders which belongs to the first and second cylinder groups. The second discharge action is performed before the start of the cranking. The second discharge action is performed in at least one cylinder which belongs to the second cylinder group. The multiple cylinders belong to the first or second cylinder group. The multiple cylinders are classified into the first or second cylinder group based on the crank angle section SCA set for each cylinder.
    Type: Application
    Filed: September 17, 2019
    Publication date: April 30, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi ASHIZAWA
  • Publication number: 20200132036
    Abstract: At the start of the engine, when the temperature of the catalyst is less than the activation temperature, control for activating the catalyst (i.e., activation control) is performed. In the activation control, the first and second discharge actions of the ignition apparatuses are controlled. The first discharge action is performed to ignite the mixed gas in the cylinder. The second discharge action is performed to generate ozone. The first discharge action is performed immediately after the start of the cranking. The first discharge action is performed in the crank angle section at the retard side rather than the compression TDC. The first discharge action is performed in every cylinder. The second discharge action is performed before the start of the cranking. The second discharge action is performed in the other cylinder except for the initial combustion cylinder.
    Type: Application
    Filed: September 17, 2019
    Publication date: April 30, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi ASHIZAWA
  • Publication number: 20190309180
    Abstract: The present invention relates to [1] a process for producing a pigment water dispersion, including step 1 of mixing a water dispersion (A) formed by dispersing a pigment (I) with a water-dispersible polymer and a water dispersion (B) of a self-dispersible pigment (II) to obtain a water dispersion (C); and step 2 of subjecting the water dispersion (C) obtained in the step 1 to heat treatment at a temperature of not lower than 40° C. to obtain the pigment water dispersion, and [2] a pigment water dispersion containing a pigment (I) dispersed with a water-dispersible polymer and a self-dispersible pigment (II), in which the water-dispersible polymer is adsorbed onto the pigment (I) and the self-dispersible pigment (II).
    Type: Application
    Filed: December 16, 2016
    Publication date: October 10, 2019
    Applicant: KAO CORPORATION
    Inventors: Satoshi TANAKA, Takeshi ASHIZAWA, Teruyuki FUKUDA
  • Publication number: 20190048784
    Abstract: An internal combustion engine 10 comprises a spark plug 70 which has a spark generation part 71, and a partition wall part 80. The partition wall part 80 partitions a combustion chamber CC into a main combustion chamber CM and an ignition chamber CI. The combustion chamber is defined by a cylinder bore wall 21, a piston crown surface part 31 and a cylinder head wall 41. The cylinder bore wall and the piston crown surface part are exposed to the main combustion chamber, and the spark generation part is exposed to the ignition chamber. “A through hole 81 and a through hole 82” are formed in the partition wall part such that the main combustion chamber and the ignition chamber are in communication with each other. Flame is generated in the ignition chamber when combustion of fuel-air mixture is started by a spark generated from the spark generation part in the ignition chamber. The flame is ejected from the ignition chamber into the main combustion chamber through the first and second through holes.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 14, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi ASHIZAWA
  • Patent number: 10072602
    Abstract: A multicylinder engine includes a plurality of intake ports, a plurality of in-cylinder injectors, and an electronic control unit. The electronic control unit is configured to initially set a value of a control parameter of the multicylinder engine, individually for each of the cylinders, such that there is a common regularity between a distribution among the cylinders, of a difference of the value of the control parameter of each of the cylinders from the value of the control parameter of a reference cylinder, and a distribution among the cylinders, of a difference of the distance of a narrowed portion of each of the cylinders from the distance of the narrowed portion of a reference cylinder. The control parameter is a parameter that determines an air-fuel ratio of an air-fuel mixture around an ignition plug at a time of ignition in stratified charge combustion operation.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: September 11, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Sakai, Takeshi Ashizawa
  • Patent number: 9976511
    Abstract: A multicylinder engine includes a plurality of intake ports, a plurality of in-cylinder injectors, and an electronic control unit. The electronic control unit is configured to initially set a value of a control parameter of the multicylinder engine, individually for each of the cylinders, such that there is a common regularity between a distribution among the cylinders, of a difference of the value of the control parameter of each of the cylinders from the value of the control parameter of a reference cylinder, and a distribution among the cylinders, of a difference of the distance of a narrowed portion of each of the cylinders from the distance of the narrowed portion of a reference cylinder. The control parameter is a parameter that determines an air-fuel ratio of an air-fuel mixture around an ignition plug at a time of ignition in stratified charge combustion operation.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: May 22, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Sakai, Takeshi Ashizawa
  • Publication number: 20170284329
    Abstract: An object is to enable stable diesel combustion in an internal combustion engine using a fuel having a relatively high self-ignition temperature. In the internal combustion engine, pre-injection and ignition of pre-spray fuel are performed, and thereafter main injection is performed to cause a portion of main-injected fuel to be burned by diffusion combustion. Injection ports of a fuel injection valve are provided in such a way that the quantity of the main injected fuel injected to a predetermined region defined by a predetermined angle equal to or smaller than 90 degrees about the fuel injection valve from the location of an ignition device in the direction of rotation of the swirl is relatively small.
    Type: Application
    Filed: August 21, 2015
    Publication date: October 5, 2017
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeshi ASHIZAWA, Yuta OCHI
  • Patent number: 9725612
    Abstract: The present invention relates to a process for producing a water-based ink for ink-jet printing, including the step of dispersing a pigment in a polymer by means of a disperser using dispersing media particles containing a zirconium compound to introduce the solid zirconium compound into the water-based ink, the water-based ink including the pigment-containing polymer particles and the solid zirconium compound, and having a zirconium compound content of not less than 2 ppm and not more than 200 ppm in terms of a concentration of zirconium in the water-based ink.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: August 8, 2017
    Assignee: KAO CORPORATION
    Inventors: Takeshi Ashizawa, Teruyuki Fukuda, Satoshi Tanaka
  • Patent number: 9715184
    Abstract: A method for producing a toner for electrostatic image development containing at least an amorphous polyester and a crystalline polylactic acid, including step 1: mixing an amorphous polyester and a crystalline polylactic acid at a temperature of from 140° to 250° C.; step 2: melt-kneading a mixture obtained in the step 1; and step 3: pulverizing and classifying a melt-kneaded product obtained in the step 2; and a toner for electrostatic image development obtainable by the method. The toner for electrostatic image development obtainable by the method of the present invention is suitably used in development or the like of latent images formed in an electrostatic development method, an electrostatic recording method, an electrostatic printing method, or the like.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: July 25, 2017
    Assignee: Kao Corporation
    Inventors: Takeshi Ashizawa, Shogo Watanabe
  • Patent number: 9678448
    Abstract: A method for producing a toner for electrostatic image development containing at least an amorphous polyester and a crystalline polylactic acid, including step 1: mixing an amorphous polyester and a crystalline polylactic acid at a temperature of from 140° to 250° C.; step 2: melt-kneading a mixture obtained in the step 1; and step 3: pulverizing and classifying a melt-kneaded product obtained in the step 2; and a toner for electrostatic image development obtainable by the method. The toner for electrostatic image development obtainable by the method of the present invention is suitably used in development or the like of latent images formed in an electrostatic development method, an electrostatic recording method, an electrostatic printing method, or the like.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: June 13, 2017
    Assignee: Kao Corporation
    Inventors: Takeshi Ashizawa, Shogo Watanabe
  • Publication number: 20160319766
    Abstract: A multicylinder engine includes a plurality of intake ports, a plurality of in-cylinder injectors, and an electronic control unit. The electronic control unit is configured to initially set a value of a control parameter of the multicylinder engine, individually for each of the cylinders, such that there is a common regularity between a distribution among the cylinders, of a difference of the value of the control parameter of each of the cylinders from the value of the control parameter of a reference cylinder, and a distribution among the cylinders, of a difference of the distance of a narrowed portion of each of the cylinders from the distance of the narrowed portion of a reference cylinder. The control parameter is a parameter that determines an air-fuel ratio of an air-fuel mixture around an ignition plug at a time of ignition in stratified charge combustion operation.
    Type: Application
    Filed: April 27, 2016
    Publication date: November 3, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki SAKAI, Takeshi ASHIZAWA
  • Publication number: 20160297981
    Abstract: The present invention relates to a process for producing a water-based ink for ink-jet printing, including the step of dispersing a pigment in a polymer by means of a disperser using dispersing media particles containing a zirconium compound to introduce the solid zirconium compound into the water-based ink, the water-based ink including the pigment-containing polymer particles and the solid zirconium compound, and having a zirconium compound content of not less than 2 ppm and not more than 200 ppm in terms of a concentration of zirconium in the water-based ink.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 13, 2016
    Applicant: KAO CORPORATION
    Inventors: Takeshi ASHIZAWA, Teruyuki FUKUDA, Satoshi TANAKA
  • Publication number: 20160281589
    Abstract: An internal combustion engine includes: a spark plug arranged in the upper wall face of the combustion chamber; an in-cylinder injection valve that, when stratified charge combustion operation is performed, injects fuel into the combustion chamber so that a fuel spray is carried to the periphery of the spark plug by a tumble flow; a piston having, in a crown surface thereof, a concave portion formed so as to extend in an orthogonal direction to the axis line of a piston pin hole, and so that the depth changes in the direction of the axis line; and a bias flow generation apparatus that, in a case where stratified charge combustion operation is performed with an ignition timing retardation, generates a bias in a flow of intake air inside an intake port so that intake air is guided towards the relatively deep part in the direction of the axis line.
    Type: Application
    Filed: February 1, 2016
    Publication date: September 29, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi ASHIZAWA
  • Publication number: 20160280942
    Abstract: The present invention relates to [1] a water-based pigment dispersion for ink-jet printing including pigment particles and water, in which a scattering intensity area ratio of components included in the range of from 0 to ?60 mV in a normalized zeta potential distribution 4 that is determined through specific zeta potential measurement steps is not more than 40%, and the like, and [2] a process for producing the water-based pigment dispersion for ink-jet printing, including production step (1) of subjecting a mixture including water, a pigment, a water-dispersible polymer and an organic solvent having a solubility in water of less than 40% by mass to dispersing treatment until a volume-average particle size of the pigment particles is decreased to not more than 180 nm to obtain a pigment dispersion; production step (2) of adding water to the resulting pigment dispersion, followed by maintaining the resulting dispersion at a temperature of not higher than 40° C.
    Type: Application
    Filed: November 20, 2014
    Publication date: September 29, 2016
    Applicant: KAO CORPORATION
    Inventors: Teruyuki FUKUDA, Satoshi TANAKA, Takeshi ASHIZAWA, Daisuke HAMADA
  • Publication number: 20150323877
    Abstract: A method for producing a toner for electrostatic image development containing at least an amorphous polyester and a crystalline polylactic acid, including step 1: mixing an amorphous polyester and a crystalline polylactic acid at a temperature of from 140° to 250° C.; step 2: melt-kneading a mixture obtained in the step 1; and step 3: pulverizing and classifying a melt-kneaded product obtained in the step 2; and a toner for electrostatic image development obtainable by the method.
    Type: Application
    Filed: October 18, 2013
    Publication date: November 12, 2015
    Applicant: KAO CORPORATION
    Inventors: Takeshi Ashizawa, Shogo Watanabe
  • Patent number: 9141011
    Abstract: A method for producing a toner for electrostatic image development including the step of melt-kneading a mixture containing a resin binder and a wax, wherein the resin binder contains an amorphous polyester (A) obtained by polycondensing an alcohol component containing an aliphatic diol (a) having 3 or 4 carbon atoms, the aliphatic diol having a hydroxyl group bonded to a secondary carbon atom, and an aliphatic diol (b) containing one or more ?,?-linear alkanediols having 2, 4, 6 or 8 carbon atoms, and a carboxylic acid component. The toner for electrostatic image development can be suitably used in, for example, the development or the like of latent image formed in an electrostatic development method, an electrostatic recording method, an electrostatic printing method, or the like.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: September 22, 2015
    Assignee: Kao Corporation
    Inventors: Shogo Watanabe, Takeshi Ashizawa, Takashi Kubo, Norihiro Hirai