Patents by Inventor Yasuhiro Tasaki

Yasuhiro Tasaki 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).

  • Thermally foamable microsphere and production process thereof
    Patent number: 7931967
    Abstract: The invention provides a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer, wherein the shell contains an organosilicon compound, and a process for producing a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer by suspension polymerization of a polymerizable mixture containing at least a foaming agent and a polymerizable monomer in an aqueous dispersion medium, wherein the polymerizable mixture is suspension polymerized in the presence of the organosilicon compound.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: April 26, 2011
    Assignee: Kureha Corporation
    Inventors: Yasuhiro Tasaki, Genzo Asai, Yoshikatsu Satake
  • Heat-expandable microsphere and process for producing the same
    Publication number: 20040157057
    Abstract: The invention provides a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer, wherein the shell contains an organosilicon compound, and a process for producing a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer by suspension polymerization of a polymerizable mixture containing at least a foaming agent and a polymerizable monomer in an aqueous dispersion medium, wherein the polymerizable mixture is suspension polymerized in the presence of the organosilicon compound.
    Type: Application
    Filed: December 10, 2003
    Publication date: August 12, 2004
    Inventors: Yasuhiro Tasaki, Genzo Asai, Yoshitkatsu Satake