Patents by Inventor Kanako Tsuru

Kanako Tsuru 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).

  • PARTICULATE WATER-ABSORBING AGENT AND METHOD FOR PRODUCING THE SAME
    Publication number: 20220387971
    Abstract: [Problem] In an embodiment involving addition of a chelating agent in an upstream process of the process for production, such as the polymerization step, the residual ratio of the chelating agent in the final product, a particulate water-absorbing agent, is improved. [Solution] A particulate water-absorbing agent having a poly(meth)acrylic acid (salt)-based water-absorbing resin as a main component, containing a chelating agent having a nitrogen atom and an inorganic reducing agent having a sulfur atom, wherein the particulate water-absorbing agent has a chelating agent ratio of 0.8 to 1.
    Type: Application
    Filed: November 12, 2020
    Publication date: December 8, 2022
    Inventors: Satoshi MATSUMOTO, Kanako TSURU, Taishi KOBAYASHI, Daisuke TAKAGI, Kazushi TORII
  • Polyacrylic acid (salt)-based water absorbent resin, and method for production thereof
    Patent number: 9962680
    Abstract: Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 8, 2018
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Satoshi Matsumoto, Kunihiko Ishizaki, Kanako Tsuru
  • POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN, AND METHOD FOR PRODUCTION THEREOF
    Publication number: 20130264517
    Abstract: Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 10, 2013
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Satoshi Matsumoto, Kunihiko Ishizaki, Kanako Tsuru