Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Forming nonplanar surface
Reexamination Certificate
2007-03-20
2007-03-20
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Forming nonplanar surface
C430S288100, C430S325000, C430S396000, C430S927000, C424S078310, C424S426000, C424S487000
Reexamination Certificate
active
11067480
ABSTRACT:
In one aspect, the invention provides methods for forming a photopatterned hydrogel. In some embodiments, the methods comprise the step of exposing a solution comprising a monomer, a crosslinking agent, and a photoinitiator to a pattern of light comprising a first and a second light intensity for a period of time and under suitable conditions for the first light intensity to induce essentially complete conversion of polymerizable groups on the monomer and the crosslinking agent to form a patterned hydrogel, and for the second light intensity to induce partial conversion of the polymerizable groups on the monomer and the crosslinking agent to form partially polymerized polymers that remain soluble. In some embodiments, the first light intensity is lower than the second light intensity. In another aspect, the invention provides methods for forming porous, photopatterned hydrogels.
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Bryant Stephanie J.
Hauch Kip D.
Ratner Buddy D.
Christensen O'Connor Johnson & Kindness PLLC
Schilling Richard L.
University of Washington
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