Patents by Inventor Toshikazu Kurosaki

Toshikazu Kurosaki 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).

  • Soluble polyimide resin, process for preparing the same, and polyimide resin solution composition
    Patent number: 6100365
    Abstract: The present invention provides a novel soluble polyimide resin which is superior in solubility in solvents and transparency, which is useful particularly in electronics and optronics fields, and which has good processability; a process for production of the resin; and a solution composition of the resin. A soluble polyimide resin containing, as part or the whole of the diamine units, a 2,5(or 6)-bis(aminomethyl)bicyclo[2.2.1]heptane and having a light transmittance of 60% or more in a range of wavelength larger than 400 nm in an ultraviolet-visible light spectrum measured for a film of 10-.mu.m thickness; a process for production of the resin; and a solution composition of the resin.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: August 8, 2000
    Inventors: Toshihiko Matsumoto, Toshikazu Kurosaki, Shin Irie, Masaaki Kudo, Yoshiharu Ito, Masao Kaneko