IP Library › Granted Patent US 6,656,251
Granted Patent Utility PCT National Stage
US 6,656,251 · Confirmation No. 6396

PROCESS AND A PLANT FOR PURIFYING OF A LIQUID

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2012-02-27 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2012-02-27 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2012-02-16 PA.. Power of Attorney 1 View
2012-02-16 N417 Electronic Filing System Acknowledgment Receipt 2 View
2012-02-16 R3.73 Assignee showing of ownership per 37 CFR 3.73 1 View
2003-09-30 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-01-22 LET. Miscellaneous Incoming Letter 69 View
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Quick Facts
Patent No.
US 6,656,251
App. No.
10/031,572
Filed
2002-01-22
Granted
2003-12-02
Examiner
SMITH, DUANE
Art Unit
1724
PTA
0 days