Patents by Inventor Yasuhiro Awatsu

Yasuhiro Awatsu 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).

  • (Meth)acrylic acid alkyl ester polymer and use thereof
    Patent number: 11634523
    Abstract: Provided are a novel acrylic polymer that has moderate crosslinking reactivity and is suitable for sealant applications and a sealant using the polymer. The (meth)acrylic acid alkyl ester polymer according to the invention has a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) method of 30,000 to 150,000 and a number average molecular weight (Mn) of less than 20,000 and has 1.1 to 3.0 methyldimethoxysilyl groups, more than 0.5 methyldimethoxysilyl groups at side chains of a molecular chain, and more than 0.5 methyldimethoxysilyl groups at molecular chain terminals, per one molecule of the polymer.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: April 25, 2023
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Yasuhiro Awatsu, Naoki Shimada, Mitsuo Senoo
  • (Meth)Acrylic Acid Alkyl Ester Polymer and Use Thereof
    Publication number: 20200362156
    Abstract: Provided are a novel acrylic polymer that has moderate crosslinking reactivity and is suitable for sealant applications and a sealant using the polymer. The (meth)acrylic acid alkyl ester polymer according to the invention has a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) method of 30,000 to 150,000 and a number average molecular weight (Mn) of less than 20,000 and has 1.1 to 3.0 methyldimethoxysilyl groups, more than 0.5 methyldimethoxysilyl groups at side chains of a molecular chain, and more than 0.5 methyldimethoxysilyl groups at molecular chain terminals, per one molecule of the polymer.
    Type: Application
    Filed: August 23, 2018
    Publication date: November 19, 2020
    Inventors: Yasuhiro Awatsu, Naoki Shimada, Mitsuo Senoo