IP Library Granted Patent US 5,850,491
Granted Patent Utility
US 5,850,491 · App. 08/794,739

Double-stage acousto-optical waveguide device, having polarization-independent response

Inventors: Salvatore Morasca, Steffen Schmid
Patented Case View Patent ↗
Granted: Dec 15, 1998 Filed: Feb 3, 1997
Inventors
Salvatore Morasca
Steffen Schmid
Assignee (at issue)
Pirelli Cavi S.p.A.

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 5,850,491
App. No.
08/794,739
Filed
1997-02-03
Granted
1998-12-15
Kind
A