Granted Patent
Utility
US 6,175,375 · App. 09/491,323
Method and apparatus for compensating for a darkness shift during the life of an electrophotographic printer cartridge
Inventors:
Douglas Anthony Able, Cyrus Bradford Clarke, Mark Edwin Kirtley Lund, Daniel George Mlejnek, George P. Olson, Gregory Lawrence Ream, Thomas Campbell Wade
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Jan 25, 2000
Inventors
Douglas Anthony Able
Cyrus Bradford Clarke
Mark Edwin Kirtley Lund
Daniel George Mlejnek
George P. Olson
Gregory Lawrence Ream
Thomas Campbell Wade
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.