Patents by Inventor Yoshinobu Oonuma

Yoshinobu Oonuma 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).

  • Alicyclic epoxy resins, their preparation process, their compositions, epoxy resin cured product, and uses of alicyclic epoxy resin compositions
    Publication number: 20060194063
    Abstract: Alicyclic epoxy resins having high transparency, suited for application to optical materials, coating materials, etc., and solid at normal temperature are provided. These alicyclic epoxy resins meet the following requirements (a) to (d): (a) epoxy equivalent is 500 to 10,000; (b) nuclear hydrogenation rate is not lower than 96%; (c) softening temperature as measured by the ring and ball method of JIS-K-7234 is 40 to 200° C.; and (d) light transmittance measured at a wavelength of 400 nm is not less than 90%.
    Type: Application
    Filed: February 23, 2006
    Publication date: August 31, 2006
    Applicants: MITSUBISHI CHEMICAL CORPORATION, JAPAN EPOXY RESINS CO., LTD.
    Inventors: Kouya Murai, Yoshinobu Oonuma