IP Library Granted Patent US 6,640,822
Granted Patent Utility
US 6,640,822 · Confirmation No. 9722

SYSTEM AND METHOD OF OPERATION OF A DIGITAL MASS FLOW CONTROLLER

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2020-05-04 SOL.NTC.SUIT Report on the filing or determination of an action regarding a patent 1 View
2011-03-24 SOL.NTC.SUIT Report on the filing or determination of an action regarding a patent 1 View
2007-06-14 PA.. Power of Attorney 6 View
2007-06-14 R3.73 Assignee showing of ownership per 37 CFR 3.73 1 View
2007-06-14 N417 Electronic Filing System Acknowledgment Receipt 2 View
2003-09-10 IFEE Issue Fee Payment (PTO-85B) 2 View
2002-04-29 TRNA Transmittal of New Application 2 View
2002-04-29 DRW Drawings-only black and white line drawings 5 View
2002-02-05 TRNA Transmittal of New Application 3 View
2002-02-05 A.PE Preliminary Amendment 8 View
2002-02-05 SPEC Specification 38 View
2002-02-05 CLM Claims 5 View
2002-02-05 ABST Abstract 1 View
2002-02-05 DRW Drawings-only black and white line drawings 5 View
2002-02-05 OATH Oath or Declaration filed 8 View
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Quick Facts
Patent No.
US 6,640,822
App. No.
10/068,052
Filed
2002-02-05
Granted
2003-11-04
Pub. No.
US20020117202A1
Art Unit
3753
PTA
-56 days