Patents by Inventor Masayuki Yamana

Masayuki Yamana 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).

  • Fluorine-containing polymer
    Patent number: 4681974
    Abstract: A fluorine-containing polymer comprising units of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are, the same or different, a fluorine-containing organic group, R.sup.3 and R.sup.4 are, the same and different, hydrogen or a lower acyl group, and Q.sup.1 and Q.sup.2 are, the same or different, a divalent organic group with at least one oxy group, which polymer having a number average molecular weight of 5,000 to 100,000, which is easily dissolved in oils and lowers surface tension thereof.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: July 21, 1987
    Assignee: Daikin Industries Ltd.
    Inventors: Iwao Hisamoto, Masayuki Yamana