Patents Assigned to Ocutec Ltd.
  • Polymers for contact lenses
    Patent number: 9000065
    Abstract: The present invention relates to a polyurethane prepared from a mixture comprising: (a) at least one polyethylene glycol; (b) at least one di-isocyanate; (c) at least one polydialkyl siloxane diol; and (d) at least one diol of formula (I) wherein n is an integer from 1 to 25; wherein the polyethylene glycol, di-isocyanate, polydialkyl siloxane diol and diol are reacted under substantially anhydrous conditions. Further aspects of the invention relate to a process for preparing a polyurethane.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 7, 2015
    Assignee: Ocutec Ltd.
    Inventors: Abdul Rashid, Roderick William Jonathan Bowers, Wade Tipton, Neil Bonnette Graham