Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-02-20
2007-02-20
Peng, Kuo-Liang (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S415000, C525S417000
Reexamination Certificate
active
10721877
ABSTRACT:
A thermo-sensitve copolymer of following formula;is disclosed; wherein R1is hydrogen, or —C(═O)—R2; R2is C7-30alkyl substituted or unsubstituted with functional groups; R3is hydrogen, or C1-6alkyl; and x, y or z individually is an integer greater than 0. The thermo-sensitive copolymers disclosed here are easy to be implanted into a human body through injection. The biodegradability is greatly improved and the cytotoxicity of the copolymers is low.
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Chang Ken-Yuan
Hsieh Ming-Fa
Jan Shu-Hua
Jan Yu-Yan
Kan Pei
Bacon & Thomas PLLC
Industrial Technology Research Institute
Peng Kuo-Liang
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