IP Library › Granted Patent US 6,624,889
Granted Patent Utility
US 6,624,889 · Confirmation No. 7233

CASCADED FILTER EMPLOYING AN AOTF AND NARROWBAND BIREFRINGENT FILTERS

Inventor: Shifang Li
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 Code Description Pages PDF
2003-07-17 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-07-17 LET. Miscellaneous Incoming Letter 2 View
2002-04-29 TRNA Transmittal of New Application 2 View
2002-04-29 SPEC Specification 21 View
2002-04-29 CLM Claims 5 View
2002-04-29 ABST Abstract 1 View
2002-04-29 DRW Drawings-only black and white line drawings 5 View
2002-04-29 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,624,889
App. No.
10/135,256
Filed
2002-04-29
Granted
2003-09-23
Art Unit
2877
PTA
0 days