Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From aldehyde or derivative thereof as reactant
Reexamination Certificate
2007-01-02
2007-01-02
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From aldehyde or derivative thereof as reactant
C528S491000, C525S054200, C525S054300, C525S050000, C530S391900, C530S416000, C568S497000
Reexamination Certificate
active
10659734
ABSTRACT:
The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.
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Evans Susan T.
Nektar Therapeutics AL, Corporation
Truong Duc
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