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:
Mar. 06, 2012
Filed:
Feb. 06, 2009
Applicants:
Hiroyuki Ueyama, Tokyo, JP;
Seiichiro Ikawa, Tokyo, JP;
Junichi Iwata, Tokyo, JP;
Inventors:
Assignee:
CooperVision International Holding Company, LP, St. Michael, BB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydrophilic polysiloxane macromonomer containing polyoxyethylene as a hydrophilic side chains pendant to a polysiloxane main chain for imparting transparency, oxygen permeability, and hydrophilic properties to a contact lens is disclosed. The properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.