Granted Patent
Utility
US 6,563,640 · App. 09/720,227
Dichroic polarizer and method for making the same
Inventors:
Leonid Y. Ignatov, Yuri A. Bobrov, Pavel I. Lazarev
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Apr 2, 2001
Inventors
Leonid Y. Ignatov
Yuri A. Bobrov
Pavel I. Lazarev
Assignee (at issue)
Optiva, 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.