IP Library › Granted Patent US 6,451,989
Granted Patent Utility
US 6,451,989 · Confirmation No. 3144

BLACK AZO DYES

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2014-07-31 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-07-31 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-07-11 PA.. Power of Attorney 1 View
2014-07-11 R3.73 Assignee showing of ownership per 37 CFR 3.73 1 View
2014-07-11 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-06-18 TRNA Transmittal of New Application 2 View
2001-06-18 A.PE Preliminary Amendment 7 View
2001-06-18 SPEC Specification 24 View
2001-06-18 CLM Claims 10 View
2001-06-18 ABST Abstract 1 View
2001-06-18 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,451,989
App. No.
09/883,904
Filed
2001-06-18
Granted
2002-09-17
Pub. No.
US20020049309A1
Art Unit
1626
PTA
0 days