Granted Patent
Utility
US 5,818,162 · App. 08/828,705
Multi-level conductive black matrix
Inventor:
Paul M. Drumm
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Mar 31, 1997
Inventor
Paul M. Drumm
Assignee (at issue)
Candescent Technologies 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.