Granted Patent
Utility
US 6,027,672 · App. 09/002,065
Method of producing large polymer optical blanks with predictable axil refractive index profile
Inventors:
William H. Weitzel, Ugur Ortabasi
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Dec 31, 1997
Inventors
William H. Weitzel
Ugur Ortabasi
Assignee (at issue)
LightPath Technologies, 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.