Granted Patent
Utility
US 6,597,839 · App. 09/790,650
Method and device for reducing polarization dependence in an optical component or optical system
Inventors:
Stephen J. Mihailov, Derwyn C. Johnson
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Feb 23, 2001
Inventors
Stephen J. Mihailov
Derwyn C. Johnson
Assignee (at issue)
HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES
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.