Patents by Inventor Yoshiji Masaoka

Yoshiji Masaoka 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).

  • Photocurable resin composition prepared from urethane acrylate oligomer containing bisphenols
    Patent number: 4672080
    Abstract: A photo-curable resin composition containing urethane oligomer compounds represented by a following general formula (I) ##STR1## [wherein R.sub.1 indicates --H or --CH.sub.3. R.sub.2 indicates an alkylene group with or without side chain having 1 to 6 carbon atoms or --(--CH.sub.2 CH.sub.2 --O--).sub.m --CH.sub.2 CH.sub.2 --, m=1-5. R.sub.3 indicates a substituent selected from a group comprising ##STR2## n is a number selected from integers 1 to 10 so as the molecular weight of compound to be not more than 5000] as a part or the whole of base resin.
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: June 9, 1987
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Yoshiji Masaoka, Motonobu Kobo
  • Urethane (meth)acrylate compounds
    Patent number: 4587352
    Abstract: A novel urethane (meth)acrylate compound represented by a general formula shown below.
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: May 6, 1986
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Yoshiji Masaoka, Motonobu Kubo
  • Film-forming composition comprising chlorinated polyalkylene glycol
    Patent number: 4539395
    Abstract: A film-forming composition containing a chlorinated polyolefinglycol as a binder component which is obtained by uniformly chlorinating in solution polyethyleneglycol and/or polypropyleneglycol having a molecular weight not lower than 200 to a chlorine content of 50-75% by weight.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: September 3, 1985
    Assignee: Sanyo Kokusaku Pulp Co., Ltd.
    Inventors: Kazuo Shimizu, Yoshiji Masaoka, Mutsuro Takaoka