Patents by Inventor Yoshio Irie

Yoshio Irie 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: 10427712
    Abstract: The automatic driving system comprises an electric power steering apparatus and a control apparatus that performs automatic steering control. The control apparatus is programmed to perform determining processing and coping processing. In the determining processing, it is determined whether the automatic driving system is working well or not working well, based on tracking condition of the target traveling route by the vehicle. The coping processing is processing to increase a degree with which the steering intervention by the driver is reflected to a control variable of the electric power steering apparatus when the automatic driving system is determined to be not working well.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: October 1, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoji Kunihiro, Yoshinori Watanabe, Yoshio Kudo, Yutaka Aoki, Ryo Irie, Masateru Amano
  • Patent number: 9593212
    Abstract: The present invention provides a method for producing a water absorbent resin particle, in high productivity, not only in a controlled manner of particle size but also enhancing fundamental property (absorption capacity or absorption capacity against pressure) of a water absorbent resin.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: March 14, 2017
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Shigeru Sakamoto, Yoshio Irie, Hiroyuki Ikeuchi, Makoto Nagasawa, Kunihiko Ishizaki, Sayaka Machida
  • Patent number: 9243079
    Abstract: A method for producing a polyacrylic water-absorbent resin powder includes the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after polymerizing, fragmenting the resulting hydrated gel crosslinked polymer; and drying the fragmented hydrated gel crosslinked polymer. The gas is dissolved and/or dispersed in the monomer solution by (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; or (c) introducing the gas with the acrylic monomer solution via fine holes. The production method efficiently produces a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 26, 2016
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Shigeru Sakamoto, Yoshio Irie, Kozo Nogi, Kunihiko Ishizaki
  • Patent number: 8875415
    Abstract: The present invention is to provide a drying method by which both cost reduction and superior physical properties can be attained in a step which comprises subjecting a water-containing gel-like crosslinked polymer obtained by polymerizing an aqueous monomer solution to fine granulation during or after the polymerization, and drying the resultant particulate water-containing gel-like crosslinked polymer with a through-circulation band dryer. The method has a feature in that the drying conditions over a period from a time of introducing the particulate water-containing gel-like crosslinked polymer into a drying zone of the through-circulation band dryer to a time of reaching a solid content concentration thereof to 80% by weight, satisfy that (1) a difference of temperature between a temperature of hot air blown to a particulate hydrogel layer and a temperature measured after the hot air passes through the particulate hydrogel layer is 20 to 70° C.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: November 4, 2014
    Assignee: Nippon Shokubai, Co., Ltd.
    Inventor: Yoshio Irie
  • Publication number: 20140296465
    Abstract: A method for producing a polyacrylic water-absorbent resin powder includes the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after polymerizing, fragmenting the resulting hydrated gel crosslinked polymer; and drying the fragmented hydrated gel crosslinked polymer, the gas being dissolved and/or dispersed in the monomer solution by (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; or (c) introducing the gas with the acrylic monomer solution via fine holes. The production method efficiently produces a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Shigeru SAKAMOTO, Yoshio IRIE, Kozo NOGI, Kunihiko ISHIZAKI
  • Patent number: 8791210
    Abstract: A method for producing a polyacrylic water-absorbent resin powder includes the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after polymerizing, fragmenting the resulting hydrated gel crosslinked polymer; and drying the fragmented hydrated gel crosslinked polymer, the gas being dissolved and/or dispersed in the monomer solution by (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; or (c) introducing the gas with the acrylic monomer solution via fine holes. The production method efficiently produces a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: July 29, 2014
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Shigeru Sakamoto, Yoshio Irie, Kozo Nogi, Kunihiko Ishizaki
  • Patent number: 8546492
    Abstract: The present invention provides a surface treatment method for a water-absorbing resin comprising three steps of: 1) a humidifying and mixing step for mixing a base polymer and a surface cross-linking agent solution to obtain a “humidified substance”; 2) a pretreatment step for raising temperature of said humidified substance to obtain a “pretreated substance”; and 3) a surface cross-linking reaction step for cross-linking said pretreated substance to obtain a surface cross-linked “water-absorbing resin”; wherein dew point in the pretreatment step of the above 2) is from 50° C. to 95° C., and temperature of said humidified substance is raised from temperature below the dew point up to a temperature of 10° C. higher than the dew point.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: October 1, 2013
    Assignee: Nippon Shokubai, Co., Ltd.
    Inventors: Atsushi Motoyama, Seiji Kato, Makoto Matsumoto, Takaaki Kawano, Yoshio Irie
  • Patent number: 8519212
    Abstract: The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: August 27, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yorimichi Dairoku, Yoshio Irie, Shinichi Fujino, Yasuhiro Fujita, Takashi Azumi, Kunihiko Ishizaki
  • Patent number: 8497226
    Abstract: An object of the present invention is to provide a water absorbent having excellent gel properties and showing excellent properties when used in a water-absorbing material of a sanitary/hygienic material such as paper diaper. Moreover, another object of the present invention is to provide a water absorbent which is safe and excellent in liquid permeability, and in which an amount of liquid permeability improver for improving the liquid permeability is reduced. The water absorbent is made from a water-absorbing resin prepared by a specific polymerization method and having a high degree of cross-linking, a high liquid holding property and a high gel strength (its swelling pressure of gel layer of is 35 kdyne/cm2 or more). This water absorbent is further processed to have a particular particle size distribution (95 wt % or more of its particles are less than 850ƒÊm but not less than 106ƒÊm, and logarithmic standard deviation (ƒĐƒÄ) is in a range of 0.25 to 0.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: July 30, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kazushi Torii, Hirofumi Shibata, Taku Iwamura, Yoshio Irie, Yorimichi Dairoku, Yoshiro Mitsukami, Sayaka Machida
  • Publication number: 20120329953
    Abstract: The present invention is to provide a drying method by which both cost reduction and superior physical properties can be attained in a step which comprises subjecting a water-containing gel-like crosslinked polymer obtained by polymerizing an aqueous monomer solution to fine granulation during or after the polymerization, and drying the resultant particulate water-containing gel-like crosslinked polymer with a through-circulation band dryer. The method has a feature in that the drying conditions over a period from a time of introducing the particulate water-containing gel-like crosslinked polymer into a drying zone of the through-circulation band dryer to a time of reaching a solid content concentration thereof to 80% by weight, satisfy that (1) a difference of temperature between a temperature of hot air blown to a particulate hydrogel layer and a temperature measured after the hot air passes through the particulate hydrogel layer is 20 to 70° C.
    Type: Application
    Filed: March 7, 2011
    Publication date: December 27, 2012
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventor: Yoshio Irie
  • Publication number: 20110313113
    Abstract: A production method of the present invention is a polyacrylic water-absorbent resin powder production method including the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the acrylic monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after the step of polymerizing, fragmenting a hydrated gel crosslinked polymer obtained by polymerizing the acrylic monomer solution; and drying by heat the hydrated gel crosslinked polymer thus fragmented, the gas being dissolved and/or dispersed in the acrylic monomer solution by at least one of the methods (a) to (c): (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; and (c) introducing the gas with the acrylic monomer solution via fine holes.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 22, 2011
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Shigeru Sakamoto, Yoshio Irie, Kozo Nogi, Kunihiko Ishizaki
  • Publication number: 20110040044
    Abstract: The present invention provides a surface treatment method for a water-absorbing resin comprising three steps of: 1) a humidifying and mixing step for mixing a base polymer and a surface cross-linking agent solution to obtain a “humidified substance”; 2) a pretreatment step for raising temperature of said humidified substance to obtain a “pretreated substance”; and 3) a surface cross-linking reaction step for cross-linking said pretreated substance to obtain a surface cross-linked “water-absorbing resin”; wherein dew point in the pretreatment step of the above 2) is from 50° C. to 95° C., and temperature of said humidified substance is raised from temperature below the dew point up to a temperature of 10° C. higher than the dew point.
    Type: Application
    Filed: April 10, 2009
    Publication date: February 17, 2011
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Atsushi Motoyama, Seiji Kato, Makoto Matsumoto, Takaaki Kawano, Yoshio Irie
  • Patent number: 7851550
    Abstract: A method for surface crosslinking water-absorbing resin of the present invention includes a step (1) of obtaining a wet mixture, a step (2) of obtaining a dried particulate composition, and a step (3) of carrying out a surface crosslinking reaction. With this, since a processing time of each step becomes short, it is possible to mass produce the water-absorbing resin having excellent physical properties. Moreover, a method for manufacturing the water-absorbing resin of the present invention includes a modifying step and a cooling step. The modifying step and/or the cooling step are/is carried out by using stirring means including a rotation axis having a plurality of stirring boards, and the stirring means includes the stirring board having a specific thickness and/or a scraping blade having a specific shape. With this, it is possible to suppress the generation of the fine powder in the modifying step and/or the cooling step.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: December 14, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenji Kadonaga, Yorimichi Dairoku, Shin-ichi Fujino, Hiroko Okochi, Yoshio Irie, Hideyuki Tahara
  • Publication number: 20100308263
    Abstract: An object of the present invention is to provide a water absorbent having excellent gel properties and showing excellent properties when used in a water-absorbing material of a sanitary/hygienic material such as paper diaper. Moreover, another object of the present invention is to provide a water absorbent which is safe and excellent in liquid permeability, and in which an amount of liquid permeability improver for improving the liquid permeability is reduced. The water absorbent is made from a water-absorbing resin prepared by a specific polymerization method and having a high degree of cross-linking, a high liquid holding property and a high gel strength (its swelling pressure of gel layer of is 35 kdyne/cm2 or more). This water absorbent is further processed to have a particular particle size distribution (95 wt % or more of its particles are less than 850ƒÊm but not less than 106ƒÊm, and logarithmic standard deviation (ƒĐƒÄ) is in a range of 0.25 to 0.
    Type: Application
    Filed: August 13, 2010
    Publication date: December 9, 2010
    Inventors: Kazushi Torii, Hirofumi Shibata, Taku Iwamura, Yoshio Irie, Yorimichi Dairoku, Yoshiro Mitsukami, Sayaka Machida
  • Patent number: 7825169
    Abstract: A water-absorbent composition includes: a specific plant extract; a water-absorbent resin whose surface portion and/or periphery thereof is treated; and/or a water-absorbent resin having a specific property. Specifically, it is preferable to use a water-absorbent resin having three characteristics: (1) a specific neutralization rate, (2) a specific particle diameter, and (3) a specific plant extract. The water-absorbent composition has a superior deodorant performance and an absorbent characteristic when the water-absorbent composition is used (provided) in an absorbing product such as a paper diaper, thereby providing a superior deodorant performance and a superior absorbent characteristic to the foregoing absorbing product.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: November 2, 2010
    Assignee: Nippon Shokubai Co. Ltd.
    Inventors: Katsuyuki Wada, Hiroko Ueda, Kunihiko Ishizaki, Yoshio Irie, Yasuhisa Nakashima
  • Patent number: 7816445
    Abstract: The subject invention provides a hydrophilic polymer (water-absorbing resin) which is superior in performance and productivity. According to the production method of the present invention, a hydrophilichigh-molecular-weight compound is dispersed in an aqueous solution containing a hydrophilic monomer. The dispersed hydrophilic high-molecular-weight compound is dissolved by heat of neutralization (heat of hydration) and/or heat of polymerization generated in the process of producing a hydrophilic polymer.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: October 19, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yorimichi Dairoku, Yoshiro Mitsukami, Yoshio Irie, Shin-ichi Fujino
  • Patent number: 7803880
    Abstract: An object of the present invention is to provide a water absorbent having excellent gel properties and showing excellent properties when used in a water-absorbing material of a sanitary/hygienic material such as paper diaper. Moreover, another object of the present invention is to provide a water absorbent which is safe and excellent in liquid permeability, and in which an amount of liquid permeability improver for improving the liquid permeability is reduced. The water absorbent is made from a water-absorbing resin prepared by a specific polymerization method and having a high degree of cross-linking, a high liquid holding property and a high gel strength (its swelling pressure of gel layer of is 35 kdyne/cm2 or more). This water absorbent is further processed to have a particular particle size distribution (95 wt % or more of its particles are less than 850ƒÊm but not less than 106ƒÊm, and logarithmic standard deviation (ƒĐƒÄ) is in a range of 0.25 to 0.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: September 28, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kazushi Torii, Hirofumi Shibata, Taku Iwamura, Yoshio Irie, Yorimichi Dairoku, Yoshiro Mitsukami, Sayaka Machida
  • Publication number: 20100222758
    Abstract: The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.
    Type: Application
    Filed: May 11, 2010
    Publication date: September 2, 2010
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Yorimichi DAIROKU, Yoshio IRIE, Shinichi FUJINO, Yasuhiro FUJITA, Takashi AZUMI, Kunihiko ISHIZAKI
  • Patent number: 7741400
    Abstract: The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 22, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yorimichi Dairoku, Yoshio Irie, Shinichi Fujino, Yasuhiro Fujita, Takashi Azumi, Kunihiko Ishizaki
  • Patent number: 7694900
    Abstract: A method for disintegrating a hydrate polymer characterized by disintegrating a hydrate polymer having a solid content in the range of 50-70 wt. % with a screw extruder while supplying 0.1-30 parts by weight of water per 100 parts by weight of the polymer to the extruder. Since the product of disintegration is prevented from inducing mutual adhesion, it does not form masses of conglomeration when it is dried.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: April 13, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yoshio Irie, Yorimichi Dairoku, Yasuhiro Fujita, Kenji Tada, Hirofumi Shibata