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:
Jan. 25, 2005
Filed:
Feb. 14, 2003
Ture Kindt-larsen, Holte, DK;
Per Wolff, Birkerød, DK;
Jens-erik Sørensen, Hellerup, DK;
Frederik Resen Steenstrup, Hellerup, DK;
Hélène Rossignol, Copenhagen, DK;
Frank F. Molock, Orange Park, FL (US);
Ture Kindt-Larsen, Holte, DK;
Per Wolff, Birkerød, DK;
Jens-Erik Sørensen, Hellerup, DK;
Frederik Resen Steenstrup, Hellerup, DK;
Hélène Rossignol, Copenhagen, DK;
Frank F. Molock, Orange Park, FL (US);
Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US);
Abstract
The present invention relates to compositions comprising poly-HEMA having a peak molecular weight between about 25,000 and about 100,000, preferably between 25,000 and 80,000 and a polydispersity of less than about 2 to less than about 3.8 respectively and covalently bonded thereon, at least one cross-linkable functional group. The present invention further relates to low polydispersity poly-HEMA suitable for making the crosslinkable prepolymers, processes for functionalizing and purifying said poly-HEMA to form said crosslinkable prepolymers, viscous solutions made from said crosslinkable prepolymers, hydrogels made from said viscous solutions and articles made from said crosslinkable polymers, hydrogels and viscous solutions.