Patents by Inventor Tomoyoshi Ohtaki

Tomoyoshi Ohtaki 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: 20100124615
    Abstract: A process for producing a crosslinkable resin formed product is disclosed which comprises providing a polymerizable composition containing a cycloolefin monomer, a metathesis polymerization catalyst, a chain transfer agent, and a crosslinking agent, and heating the polymerizable composition to 50° C. or more to effect ring-opening metathesis bulk polymerization, the temperature of the polymerizable composition before heating being maintained at ?10° C. to +20° C. According to the present invention, a process for efficiently producing a crosslinkable resin formed product which exhibits excellent flowability when melted by heat and does not produce voids(blurs) inside a laminate or impair flatness when laminated on a substrate is provided.
    Type: Application
    Filed: February 6, 2007
    Publication date: May 20, 2010
    Applicant: ZEON CORPORATION
    Inventors: Tomoyoshi Ohtaki, Kazuyuki Onishi, Narumi Suzuki, Kiyoshige Kojima, Junji Kodemura
  • Publication number: 20090305018
    Abstract: A crosslinkable resin formed product comprising a cycloolefin resin obtained by ring-opening metathesis bulk polymerization of a cycloolefin monomer and a crosslinking agent, the cycloolefin resin having a weight average molecular weight (Mw) of 10,000 to 50,000 and a molecular weight distribution (Mw/Mn) of 4.4 or less, a crosslinked resin formed product produced by crosslinking the crosslinkable resin formed product, and a crosslinked resin-metal clad laminate produced by laminating the crosslinked resin formed product on a metal foil are disclosed. According to the present invention, a crosslinkable resin formed product which exhibits excellent flowability when melted by heat, and does not produce voids inside the laminate or impair flatness when laminated with a substrate, a crosslinked resin formed product produced by crosslinking the crosslinkable resin formed product, and a crosslinked resin-metal clad laminate produced by laminating the crosslinked resin formed product on a metal foil are provided.
    Type: Application
    Filed: February 6, 2007
    Publication date: December 10, 2009
    Applicant: Zeon Corporation
    Inventors: Tomoyoshi Ohtaki, Kazuyuki Onishi, Narumi Suzuki, Kiyoshige Kojima, Junji Kodemura