Patents by Inventor Hitoshi SASHIWA

Hitoshi SASHIWA 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).

  • Microorganism having PHA synthase-coding genes and method for producing PHA using same
    Patent number: 10865429
    Abstract: An object of the invention is to improve the crystallization speed of a PHA copolymer which is to be slowly crystallized, and improve the melt workability and productivity. A microorganism is used which has genes encoding two or more different PHA synthases derived from the genus Aeromonas. The genes encoding the PHA synthases derived from the genus Aeromonas preferably include genes encoding at least two PHA synthases which are capable of synthesizing a copolymer PHA including, as monomer unit species, 3-hydroxybutyric acid and 3-hydroxyhexanoic acid, and which are different in substrate specificity toward 3-hydroxyhexanoic acid from each other. When this microorganism is cultured, a PHA mixture can be produced which includes three or more PHA species different in melting point from each other.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 15, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Shingo Kobayashi, Hitoshi Sashiwa, Tetsuya Fujiki
  • MICROORGANISM HAVING PHA SYNTHASE-CODING GENES AND METHOD FOR PRODUCING PHA USING SAME
    Publication number: 20180305722
    Abstract: An object of the invention is to improve the crystallization speed of a PHA copolymer which is to be slowly crystallized, and improve the melt workability and productivity. A microorganism is used which has genes encoding two or more different PHA synthases derived from the genus Aeromonas. The genes encoding the PHA synthases derived from the genus Aeromonas preferably include genes encoding at least two PHA synthases which are capable of synthesizing a copolymer PHA including, as monomer unit species, 3-hydroxybutyric acid and 3-hydroxyhexanoic acid, and which are different in substrate specificity toward 3-hydroxyhexanoic acid from each other. When this microorganism is cultured, a PHA mixture can be produced which includes three or more PHA species different in melting point from each other.
    Type: Application
    Filed: September 15, 2016
    Publication date: October 25, 2018
    Applicant: Kaneka Corporation
    Inventors: Shingo KOBAYASHI, Hitoshi SASHIWA, Tetsuya FUJIKI