The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2007
Filed:
Mar. 22, 2004
Applicants:
Neil Bonnette Graham, Glasgow, GB;
Christopher Raymond Moran, Glasgow, GB;
Inventors:
Neil Bonnette Graham, Glasgow, GB;
Christopher Raymond Moran, Glasgow, GB;
Assignee:
Ocutec Limited, Glasgow, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A linear random block copolymer comprising segments of polyethylene oxide and a relatively more hydrophobic polymer, e.g. polypropylene oxide connected by hydrophobic segments containing urethane and urea groups formed from the reaction of a di-isocyanate and a diamine, wherein the diamine comprises less than 2% by weight of the total weight of the reactants used in the preparation of the copolymer.