Patents by Inventor Yuushou Nakayama

Yuushou Nakayama 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).

  • Sterically regulated methacrylic polymer and process for producing the same
    Patent number: 6864338
    Abstract: This invention provides a high-molecular-weight, sterically regulated methacrylic polymer having high stereoregularity, a narrow distribution of molecular weights, and a high molecular weight, comprising methacrylates as units containing triphenyl amino groups etc. in side chains. The sterically regulated methacrylic polymer comprises 50 to 100 mol-% unit based on methacrylate (1) having a tertiary amino group bound to at least two aromatic rings in a side chain, wherein the number-average molecular weight (Mn) is 5000 to 2000000, the poly dispersity coefficient (Mw/Mn) is 1 to 1.5, and the syndiotacticity of the methacrylic polymer is 70% or more in 2-units expression (%rr).
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 8, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Hajime Yasuda, Yuushou Nakayama, Michiharu Yamamoto
  • Trivalent organic lanthanoid complex, catalyst for production of (meth) acrylic polymer, and (meth) acrylic polymer
    Publication number: 20030166804
    Abstract: This invention provides an easily synthesized trivalent organic lanthanoid complex which can be used as a polymerization catalyst for (meth) acrylic monomers.
    Type: Application
    Filed: February 20, 2003
    Publication date: September 4, 2003
    Inventors: Hajime Yasuda, Yuushou Nakayama, Michiharu Yamamoto
  • Sterically regulated methacrylic polymer and process for producing the same
    Publication number: 20030162921
    Abstract: This invention provides a high-molecular-weight, sterically regulated methacrylic polymer having high stereoregularity, a narrow distribution of molecular weights, and a high molecular weight, comprising methacrylates as units containing triphenyl amino groups etc. in side chains.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 28, 2003
    Inventors: Hajime Yasuda, Yuushou Nakayama, Michiharu Yamamoto