IP Library › Granted Patent US 6,456,409
Granted Patent Utility Small
US 6,456,409 · Confirmation No. 4857

METHOD AND APPARATUS FOR EXTENDING FIBER TRANSMISSION DISTANCE WITH MULTIPLE PRE-EMPHASES IN OPTICALLY AMPLIFIED DWDM SYSTEM

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2005-08-22 COCOUT Certificate of Correction - Post Issue Communication 1 View
2001-08-20 TRNA Transmittal of New Application 2 View
2001-08-20 DRW Drawings-only black and white line drawings 6 View
2001-08-20 LET. Miscellaneous Incoming Letter 1 View
2001-07-16 TRNA Transmittal of New Application 4 View
2001-07-16 SPEC Specification 26 View
2001-07-16 CLM Claims 8 View
2001-07-16 ABST Abstract 1 View
2001-07-16 DRW Drawings-only black and white line drawings 6 View
2001-07-16 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,456,409
App. No.
09/906,195
Filed
2001-07-16
Granted
2002-09-24
Pub. No.
US20020015201A1
Art Unit
2633
PTA
-72 days