Granted Patent
Utility
US 6,071,660 · App. 09/267,188
Electrophotographic photoconductor containing high levels of polyolefins as charge transport additives
Inventors:
David Glenn Black, Gregory W. Haggquist, Dat Quoc Nguyen
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Mar 12, 1999
Inventors
David Glenn Black
Gregory W. Haggquist
Dat Quoc Nguyen
Assignee (at issue)
Lexmark International, 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.