Granted Patent
Utility
US 6,226,091 · App. 09/404,083
Optical fiber Mach-Zehnder interferometer fabricated with asymmetric couplers
Inventor:
Colm V. Cryan
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Sep 23, 1999
Inventor
Colm V. Cryan
Assignee (at issue)
Thomas & Betts International LLC
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.