Granted Patent
Utility
US 6,506,288 · App. 08/702,841
Optical film material especially TiO2 or Ta2O5 optical waveguide layer and method for producing such
Inventors:
Johannes Edlinger, Eduard Kugler, Helmut Rudigier
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Aug 26, 1996
Inventors
Johannes Edlinger
Eduard Kugler
Helmut Rudigier
Assignee (at issue)
Unaxis Balzers Aktiengesellschaft
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.