Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-08-14
2007-08-14
Pezzuto, Helen L (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S260000, C526S264000, C526S301000, C526S303100, C526S304000, C526S307500, C526S307700, C526S314000, C526S318420, C526S328500
Reexamination Certificate
active
10983851
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.
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Kindt-Larsen Ture
Molock Frank F.
Rossignol Hélène
Steenstrup Frederik Resen
Sørensen Jens-Erik
Harding Karen
Johnson & Johnson Vision Care, Inc
Pezzuto Helen L
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