Patents by Inventor Yasuto YANAGISAWA

Yasuto YANAGISAWA 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).

  • Method for producing mixture
    Patent number: 10428187
    Abstract: Provided is a method for producing a mixture, comprising a mixing step for mixing a slurry prepared by dispersing a filler containing carbon black and a rubber liquid prepared by dispersing or the like a rubber component. In the above producing method, the carbon black contained in the slurry has a surface average acidic functional group amount (?eq/m2) of 0.40 or more and less than 3.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: October 1, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuto Yanagisawa, Yukari Kanda, Shigenobu Waragai, Osamaru Matsuo
  • Method of producing wet master batch, wet master batch, rubber composition, and solid-liquid separating and dehydrating apparatus for wet master batch production
    Patent number: 9932450
    Abstract: Provided is a method of producing a wet master batch, including the step of: solid-liquid separating and dehydrating a coagulum slurry obtained by mixing a rubber latex with a carbon black slurry containing a carbon black dispersed in water and coagulating the mixture, the solid-liquid separating and dehydrating step including gravity filtering and vacuum filtering the coagulum slurry on a filtration filter and then pressurizing, by means of a pressurizer, the coagulum slurry on the outer peripheral surface of a drum, to thereby pressure dehydrate the coagulum slurry. Also provided is a solid-liquid separating and dehydrating apparatus for wet master batch production, which includes: a filtration filter; a filtration portion; a drum; and a pressurizer.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: April 3, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yasuto Yanagisawa
  • METHOD FOR PRODUCING MIXTURE
    Publication number: 20180079873
    Abstract: Provided is a method for producing a mixture, comprising a mixing step for mixing a slurry prepared by dispersing a filler containing carbon black and a rubber liquid prepared by dispersing or the like a rubber component. In the above producing method, the carbon black contained in the slurry has a surface average acidic functional group amount (?eq/m2) of 0.40 or more and less than 3.
    Type: Application
    Filed: March 18, 2016
    Publication date: March 22, 2018
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuto YANAGISAWA, Yukari KANDA, Shigenobu WARAGAI, Osamaru MATSUO
  • METHOD OF PRODUCING WET MASTER BATCH, WET MASTER BATCH, RUBBER COMPOSITION, AND SOLID-LIQUID SEPARATING AND DEHYDRATING APPARATUS FOR WET MASTER BATCH PRODUCTION
    Publication number: 20150119496
    Abstract: Provided is a method of producing a wet master batch, including the step of: solid-liquid separating and dehydrating a coagulum slurry obtained by mixing a rubber latex with a carbon black slurry containing a carbon black dispersed in water and coagulating the mixture, the solid-liquid separating and dehydrating step including gravity filtering and vacuum filtering the coagulum slurry on a filtration filter and then pressurizing, by means of a pressurizer, the coagulum slurry on the outer peripheral surface of a drum, to thereby pressure dehydrate the coagulum slurry. Also provided is a solid-liquid separating and dehydrating apparatus for wet master batch production, which includes: a filtration filter; a filtration portion; a drum; and a pressurizer.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yasuto YANAGISAWA