Patents by Inventor Yasuo Amishige

Yasuo Amishige 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 polyoxyalkylene alkyl ether carboxylic acid or salt thereof
    Patent number: 9233904
    Abstract: A method for producing polyoxyalkylene alkyl ether carboxylic acid or a salt thereof includes an oxidation reaction process of oxidizing polyoxyalkylene alkyl ether with oxygen by supplying an oxygen-containing gas to a suspension or a solution that has a depth of 200 mm or more and includes polyoxyalkylene alkyl ether. In the oxidation reaction process, a supply rate of the oxygen-containing gas is reduced in a period in which the conversion is greater than or equal to 50% and less than 70%.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: January 12, 2016
    Assignee: KAO CORPORATION
    Inventors: Takeshi Nakai, Toku Fujioka, Yasuo Amishige
  • Method for producing polyoxyalkylene alkyl ether carboxylic acid and salt thereof
    Patent number: 8940933
    Abstract: The present invention provides a method for producing polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, including supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor containing a noble metal catalyst to oxidize the polyoxyalkylene alkyl ether with oxygen, in which the molar ratio of the salt of polyoxyalkylene alkyl ether carboxylic acid to the polyoxyalkylene alkyl ether in the continuous stirred tank reactor is controlled to 0.33 to 49.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: January 27, 2015
    Assignee: Kao Corporation
    Inventors: Takeshi Shirasawa, Yasuo Amishige, Kaoru Omae, Akira Matsunaga, Akira Sakaguchi
  • METHOD FOR PRODUCING POLYOXYALKYLENE ALKYL ETHER CARBOXYLIC ACID OR SALT THEREOF
    Publication number: 20150025271
    Abstract: A method for producing polyoxyalkylene alkyl ether carboxylic acid or a salt thereof includes an oxidation reaction process of oxidizing polyoxyalkylene alkyl ether with oxygen by supplying an oxygen-containing gas to a suspension or a solution that has a depth of 200 mm or more and includes polyoxyalkylene alkyl ether. In the oxidation reaction process, a supply rate of the oxygen-containing gas is reduced in a period in which the conversion is greater than or equal to 50% and less than 70%.
    Type: Application
    Filed: November 27, 2012
    Publication date: January 22, 2015
    Inventors: Takeshi Nakai, Toku Fujioka, Yasuo Amishige
  • Material for water gas
    Patent number: 8652436
    Abstract: A material for water gas contains polyhydric alcohol, and hydroxycarboxylic acid.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: February 18, 2014
    Assignee: Kao Corporation
    Inventors: Yasuo Amishige, Takeshi Shirasawa
  • METHOD FOR PRODUCING POLYOXYALKYLENE ALKYL ETHER CARBOXYLIC ACID AND SALT THEREOF
    Publication number: 20120296115
    Abstract: The present invention provides a method for producing polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, including supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor containing a noble metal catalyst to oxidize the polyoxyalkylene alkyl ether with oxygen, in which the molar ratio of the salt of polyoxyalkylene alkyl ether carboxylic acid to the polyoxyalkylene alkyl ether in the continuous stirred tank reactor is controlled to 0.33 to 49.
    Type: Application
    Filed: December 22, 2010
    Publication date: November 22, 2012
    Applicant: KAO CORPORATION
    Inventors: Takeshi Shirasawa, Yasuo Amishige, Kaoru Omae, Akira Matsunaga, Akira Sakaguchi
  • MATERIAL FOR WATER GAS
    Publication number: 20110220849
    Abstract: A material for water gas contains polyhydric alcohol, and hydroxycarboxylic acid.
    Type: Application
    Filed: November 16, 2009
    Publication date: September 15, 2011
    Inventors: Yasuo Amishige, Takeshi Shirasawa