IP Library › Granted Patent US 6,606,391
Granted Patent Utility
US 6,606,391 · Confirmation No. 4068

FILTERBANK STRUCTURE AND METHOD FOR FILTERING AND SEPARATING AN INFORMATION SIGNAL INTO DIFFERENT BANDS, PARTICULARLY FOR AUDIO SIGNALS IN HEARING AIDS

⬇ PDF
 Code Description Pages PDF
2016-08-08 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2016-08-08 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2016-08-02 C.AD Change of Address 1 View
2016-08-02 PA.. Power of Attorney 1 View
2016-08-02 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2016-08-02 LET. Miscellaneous Incoming Letter 15 View
2016-08-02 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-05-02 TRNA Transmittal of New Application 2 View
2001-05-02 SPEC Specification 23 View
2001-05-02 CLM Claims 5 View
2001-05-02 ABST Abstract 1 View
2001-05-02 DRW Drawings-only black and white line drawings 6 View
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this application's details
Quick Facts
Patent No.
US 6,606,391
App. No.
09/846,366
Filed
2001-05-02
Granted
2003-08-12
Pub. No.
US20020122562A1
Examiner
NI, SUHAN
Art Unit
2643
PTA
-88 days