IP Library › Granted Patent US 6,205,270
Granted Patent Utility
US 6,205,270 · App. 09/401,686

Dense wavelength division multiplexer which includes a dense optical channel comb filter

Inventor: Simon Cao
Patented Case View Patent ↗
Granted: Mar 20, 2001 Filed: Sep 23, 1999
Inventor
Simon Cao
Assignee (at issue)
Avanex Corporation

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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 patent's details
Quick Facts
Patent No.
US 6,205,270
App. No.
09/401,686
Filed
1999-09-23
Granted
2001-03-20
Kind
A