Patents by Inventor Shigeo Tokita

Shigeo Tokita 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).

  • Polymerization composition containing vinyl benzoic acid or a derivative thereof and a vinyl compound
    Patent number: 4705836
    Abstract: Composites comprising(A) general formula (I), compound of ##STR1## [in the formula, R.sub.1 indicates either hydrogen or methyl group and R.sub.2 indicates hydrogen, alkyl radical with carbon number 1-5 to be possibly substituted with halogen, alkyleneoxide group with carbon number 2-4 to be possibly substituted with halogen or --(CH.sub.2 CH.sub.2 O)nH group (n=integral number of 1-4) to be possibly substituted with either halogen or methyl group],(B) vinyl compounds and/or silane compounds, and optionally(C) free radical developing agent and/or light sensitizer have not only an excellent adhesiveness but anti-irritation and anti-harmfulness against tissue, pulp and the like, for teeth and dentin.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: November 10, 1987
    Assignee: Nippon Shiken Dental Co., Ltd.
    Inventors: Masasuke Ohtsuka, Yoshinori Harada, Shigeo Tokita, Hideyo Maniwa