Patents by Inventor Rika Umano

Rika Umano 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).

  • Curable composition
    Patent number: 9296890
    Abstract: The curable composition is a curable composition including a liquid polysulfide polymer containing 8% by weight or more of thiol groups in one molecule, an epoxy resin, and an amine, in which the liquid polysulfide polymer is HS—(R—Sx)n—R—SH wherein R is a two valent or three valent organic group containing a —O—CH2—O— bond, the average of n is less than 10, x is an integer of 1 to 5, and the average of x is 1 to 2.5.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: March 29, 2016
    Assignee: Toray Fine Chemicals Co., Ltd.
    Inventors: Yasukazu Suga, Yukiko Hamada, Kazunori Matsumoto, Rika Umano
  • CURABLE COMPOSITION
    Publication number: 20140336340
    Abstract: The curable composition is a curable composition including a liquid polysulfide polymer containing 8% by weight or more of thiol groups in one molecule, an epoxy resin, and an amine, in which the liquid polysulfide polymer is HS—(R—Sx)n—R—SH wherein R is a two valent or three valent organic group containing a —O—CH2—O— bond, the average of n is less than 10, x is an integer of 1 to 5, and the average of x is 1 to 2.5.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 13, 2014
    Inventors: Yasukazu Suga, Yukiko Hamada, Kazunori Matsumoto, Rika Umano