Granted Patent
Utility
US 5,364,430 · App. 08/002,077
Methods of making optical waveguides
Inventor:
Arnab Sarkar
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Jan 8, 1993
Inventor
Arnab Sarkar
Assignee (at issue)
Cal-Optics, Inc.
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.