Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-02-22
2005-02-22
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S545000, C556S444000, C558S046000, C558S267000, C560S190000, C564S505000, C568S420000, C568S613000
Reexamination Certificate
active
06858736
ABSTRACT:
The present invention relates to novel hexa-arm polyethylene glycol (6-arm PEG) and its derivatives. The core of 6-arm PEG derivatives is sorbitol and the end groups can be derivatized into many different reactive functionalities that are useful in conjugating with many different targets. The present invention also provides a biodegradable polymeric hydrogel-forming composition comprising the 6-arm PEG and its derivatives, and methods of using such 6-arm PEG derivatives as surgical or biological implants or sealants.
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Chang-min Hyun
Kim In-Kyung
Lee Jung-Hun
Nho Kwang
Pak Young-Kyoung
Knobbe Martens Olson & Bear LLP
SunBio Inc.
Zucker Paul A.
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