IP Library › Granted Patent US 6,428,581
Granted Patent Utility PCT National Stage
US 6,428,581 · Confirmation No. 6007

CONCENTRATED LEUCOINDIGO SOLUTIONS

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2001-01-12 LET. Miscellaneous Incoming Letter 16 View
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Quick Facts
Patent No.
US 6,428,581
App. No.
09/720,818
Filed
2001-01-12
Granted
2002-08-06
Art Unit
1751
PTA
-16 days