Granted Patent
Utility
US 6,442,005 · App. 09/866,914
Light diffusion preventing structure
Inventors:
Tadaoki Ichikawa, Hiroshi Ito, Kazushi Noda
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: May 30, 2001
Inventors
Tadaoki Ichikawa
Hiroshi Ito
Kazushi Noda
Assignee (at issue)
TOYODA GOSEI CO., LTD.
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.