IP Library › Granted Patent US 6,664,419
Granted Patent Utility PCT National Stage
US 6,664,419 · Confirmation No. 9139

METHOD AND DEVICE FOR PURIFYING SUBSTANCES BY MEANS OF CRYSTALLISATION

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2003-09-09 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-09-09 PET. Petition Entered 1 View
2003-09-09 OATH Oath or Declaration filed 6 View
2003-08-19 PET. Petition Entered 8 View
2001-09-06 ABST Abstract 1 View
2001-09-06 LET. Miscellaneous Incoming Letter 27 View
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Quick Facts
Patent No.
US 6,664,419
App. No.
09/890,790
Filed
2001-09-06
Effective Filing
2001-08-06
Granted
2003-12-16
Art Unit
1624
PTA
0 days