Patents by Inventor Haruko Obata

Haruko Obata 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).

  • Highly functional cellulose composite
    Patent number: 10624359
    Abstract: A method for producing a cellulose composite containing cellulose and a polysaccharide, wherein a median size of colloidal cellulose composites contained in the cellulose composite as measured by a dynamic light scattering method is 0.85 ?m or more, the method including treating a mixture containing cellulose, a polysaccharide and an aqueous medium together in a wet process, wherein a solid content is controlled to be 35 mass % or more, and temperature is set at 80° C. or less.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 21, 2020
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kouichirou Enatsu, Haruko Obata, Naoaki Yamasaki
  • Cellulose composite
    Patent number: 10492510
    Abstract: The present invention relates to a cellulose composite that makes separation and aggregation less likely to occur, and, more specifically, relates to a cellulose composite comprising cellulose and one or more types of water-soluble carboxymethyl cellulose wherein tan ? of an aqueous dispersion obtained by dispersing 1 mass % of the cellulose composite in ion-exchanged water is 0.6 or lower.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: December 3, 2019
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Haruko Obata, Naoaki Yamasaki
  • Highly functional cellulose composite
    Patent number: 10080371
    Abstract: A cellulose composite which contains a cellulose and a polysaccharide and which is characterized in that the median diameter of colloidal cellulose composites contained in the cellulose composite is 0.85 ?m or more as measured by a dynamic light scattering method.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 25, 2018
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kouichirou Enatsu, Haruko Obata, Naoaki Yamasaki
  • CELLULOSE COMPOSITE
    Publication number: 20180110235
    Abstract: The present invention relates to a cellulose composite that makes separation and aggregation less likely to occur, and, more specifically, relates to a cellulose composite comprising cellulose and one or more types of water-soluble carboxymethyl cellulose wherein tan ? of an aqueous dispersion obtained by dispersing 1 mass % of the cellulose composite in ion-exchanged water is 0.6 or lower.
    Type: Application
    Filed: April 13, 2016
    Publication date: April 26, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Haruko OBATA, Naoaki YAMASAKI
  • HIGHLY FUNCTIONAL CELLULOSE COMPOSITE
    Publication number: 20170055540
    Abstract: A method for producing a cellulose composite containing cellulose and a polysaccharide, wherein a median size of colloidal cellulose composites contained in the cellulose composite as measured by a dynamic light scattering method is 0.85 ?m or more, the method including treating a mixture containing cellulose, a polysaccharide and an aqueous medium together in a wet process, wherein a solid content is controlled to be 35 mass % or more, and temperature is set at 80° C. or less.
    Type: Application
    Filed: November 15, 2016
    Publication date: March 2, 2017
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kouichirou ENATSU, Haruko OBATA, Naoaki YAMASAKI
  • Cellulose composite
    Patent number: 9351509
    Abstract: Cellulose composites of cellulose and a hydrophilic gum, the cellulose composite giving a 1-mass % aqueous dispersion thereof, which has a storage modulus (G?) of 0.06 Pa or more when the pH thereof is 4.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: May 31, 2016
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Haruko Obata, Naoaki Yamasaki
  • CELLULOSE COMPOSITE
    Publication number: 20140377442
    Abstract: Cellulose composites of cellulose and a hydrophilic gum, the cellulose composite giving a 1-mass % aqueous dispersion thereof, which has a storage modulus (G?) of 0.06 Pa or more when the pH thereof is 4.
    Type: Application
    Filed: September 12, 2014
    Publication date: December 25, 2014
    Inventors: Haruko OBATA, Naoaki YAMASAKI
  • Cellulose composite
    Patent number: 8865242
    Abstract: Disclosed is a cellulose composite which comprises cellulose and a hydrophilic gum, the cellulose composite giving a 1-mass % aqueous dispersion thereof which has a storage modulus (G?) of 0.06 Pa or more when the pH thereof is 4.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: October 21, 2014
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Haruko Obata, Naoaki Yamasaki
  • HIGHLY FUNCTIONAL CELLULOSE COMPOSITE
    Publication number: 20140171521
    Abstract: A cellulose composite which contains a cellulose and a polysaccharide and which is characterized in that the median diameter of colloidal cellulose composites contained in the cellulose composite is 0.85 ?m or more as measured by a dynamic light scattering method.
    Type: Application
    Filed: August 10, 2012
    Publication date: June 19, 2014
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kouichirou Enatsu, Haruko Obata, Naoaki Yamasaki
  • CELLULOSE COMPOSITE
    Publication number: 20130022730
    Abstract: Disclosed is a cellulose composite which comprises cellulose and a hydrophilic gum, the cellulose composite giving a 1-mass % aqueous dispersion thereof which has a storage modulus (G?) of 0.06 Pa or more when the pH thereof is 4.
    Type: Application
    Filed: March 30, 2011
    Publication date: January 24, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Haruko Obata, Naoaki Yamasaki