Granted Patent
Utility
US 6,476,880 · App. 09/966,602
Projection type color liquid crystal display apparatus capable of enhancing optical utilization efficiency
Inventors:
Susumu Tsujikawa, Masao Imai
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Oct 1, 2001
Inventors
Susumu Tsujikawa
Masao Imai
Assignee (at issue)
NEC CORPORATION
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.