Patents by Inventor Masaaki KUSUMOTO

Masaaki KUSUMOTO 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).

  • Publication number: 20220267574
    Abstract: An object of the present invention is to provide a cellulose acetate with excellent biodegradability in seawater. A cellulose acetate having a total degree of acetyl substitution of not greater than 2.7, a ratio ? of a sum of a degree of acetyl substitution at the 2-position and a degree of acetyl substitution at the 3-position to a degree of acetyl substitution at the 6-position in the total degree of acetyl substitution of not less than 2.0, and a sulfate component amount of greater than 20 ppm and not greater than 400 ppm.
    Type: Application
    Filed: December 9, 2019
    Publication date: August 25, 2022
    Applicant: DAICEL CORPORATION
    Inventors: Hiroyuki MATSUMURA, Kyokutou GA, Masaaki KUSUMOTO
  • Publication number: 20220227973
    Abstract: This cellulose acetate has a total degree of acetyl substitution of 1.75 or more and 2.55 or less, and a degree of acetyl substitution at 2-position or a degree of acetyl substitution at 3-position is 0.7 or less. This cellulose acetate composition includes the cellulose acetate and an additive. The additive is one or more selected from the group consisting of (a) substances of which a pH of a 1 wt. % aqueous solution at 20° C. is 8 or more, (b) substances that dissolve in water at 20° C. in an amount of 2 wt. % or more, and (c) substances that exhibit biodegradability in seawater.
    Type: Application
    Filed: April 8, 2022
    Publication date: July 21, 2022
    Applicant: Daicel Corporation
    Inventors: Hiroyuki MATSUMURA, Hiroki TANIGUCHI, Akihiro HIGUCHI, Tomohiro HASHIZUME, Masaaki KUSUMOTO