Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-02-27
2010-10-19
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S198000, C528S272000, C549S512000, C549S514000
Reexamination Certificate
active
07816484
ABSTRACT:
A method for preparing a polyalkylene glycol carbonate is disclosed comprising reacting a hydroxyl functional polyalkylene glycol and a reagent selected from carbonates and chloroformates in the presence of an aromatic solvent and an amine.
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Boykin Terressa M
Dr. Reddy's Laboratories Inc.
Dr. Reddy's Laboratories Limited
Franks Robert A.
Gupta Balaram
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