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:
Sep. 19, 2017
Filed:
Oct. 17, 2013
The Nippon Synthetic Chemical Industry Co., Ltd., Osaka, JP;
Novartis Ag, Basel, CH;
Mitsuo Shibutani, Osaka, JP;
Masahiro Saito, Osaka, JP;
Bernhard Seiferling, Goldbach, DE;
Jiro Tsuchiya, Kanagawa, JP;
Hirohiko Miura, Kanagawa, JP;
Yasuo Matsuzawa, Roswell, GA (US);
THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD., Osaka, JP;
NOVARTIS AG, Basel, CH;
Abstract
The present invention provides a crosslinkable prepolymer which can be used to produce crosslinked polymeric materials (or contact lenses containing the same) having a high strength and excellent durability. The present invention relates to a polyvinyl alcohol-based prepolymer containing a unit having a pendant 1,2-diol containing group and a unit having a specific crosslinkable functional group, as well as a molding using the same.