IP Library › Granted Patent US 6,649,311
Granted Patent Utility PCT National Stage
US 6,649,311 · Confirmation No. 5057

COLOUR CHANGING COMPOSITION AND COLOURING POLYMERIC ARTICLES MADE THEREFROM

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Quick Facts
Patent No.
US 6,649,311
App. No.
09/744,229
Filed
2001-05-02
Granted
2003-11-18
Art Unit
1752
PTA
0 days