Granted Patent
Utility
US 5,993,981 · App. 08/844,715
Broadband protective optical window coating
Inventors:
Joel Askinazi, Authi A. Narayanan, Hoa T. Bui, Joseph A. Vigil, John J. Vajo
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Apr 18, 1997
Inventors
Joel Askinazi
Authi A. Narayanan
Hoa T. Bui
Joseph A. Vigil
John J. Vajo
Assignee (at issue)
Raytheon Company
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.