Patents by Inventor Tomohito Yoshii

Tomohito Yoshii 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).

  • Aromatic block copolymer, decomposition method thereof and analysis method using the decomposition method
    Patent number: 8198205
    Abstract: Provided is a decomposition method of an aromatic block copolymer, wherein the aromatic block copolymer comprises a segment 1 represented by the following general formula (1) and a segment 2 comprising a structural unit represented by the following general formula (2) and/or a structural unit represented by the following general formula (3), and the segment 2 is subjected to chemical decomposition.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 12, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroshi Takigawa, Tomohito Yoshii, Shino Matsumi
  • Aromatic block copolymer, decomposition method thereof and analysis method using the decomposition method
    Publication number: 20090197763
    Abstract: Provided is a decomposition method of an aromatic block copolymer, wherein the aromatic block copolymer comprises a segment 1 represented by the following general formula (1) and a segment 2 comprising a structural unit represented by the following general formula (2) and/or a structural unit represented by the following general formula (3), and the segment 2 is subjected to chemical decomposition.
    Type: Application
    Filed: June 29, 2007
    Publication date: August 6, 2009
    Inventors: Hiroshi Takigawa, Tomohito Yoshii, Shino Matsumi