Granted Patent
Utility
US 6,827,826 · App. 10/288,278
Planar optical devices and methods for their manufacture
Inventors:
Richard E. Demaray, Kai-An Wang, Ravi Mullapudi, Douglas P. Stadtler, Hongmei Zhang, Rajiv Pethe
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Nov 4, 2002
Inventors
Richard E. Demaray
Kai-An Wang
Ravi Mullapudi
Douglas P. Stadtler
Hongmei Zhang
Rajiv Pethe
Assignee (at issue)
Symmorphix, 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.