Patents by Inventor Yoshimitsu Ohyama

Yoshimitsu Ohyama 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).

  • Capsule type hardener and composition
    Publication number: 20060128835
    Abstract: A capsule type curing agent which comprises a core containing an amine type curing agent (A) and a capsule and a membrane covering said core, wherein said capsule membrane has a bonding group (x) absorbing infrared ray of a wave-number of 1630 to 1680 cm?1 and/or a bonding group (y) absorbing infrared ray of a wave-number of 1680 to 1725 cm?1, and contains cured material of an epoxy resin by the amine type curing agent (A) as a curing agent, and weight ratio of the core and the capsule membrane is 100:1 to 100:100.
    Type: Application
    Filed: October 23, 2003
    Publication date: June 15, 2006
    Inventors: Taketoshi Usui, Yoshimitsu Ohyama