Granted Patent
Utility
US 6,652,634 · App. 09/921,486
Polymeric dispersants used for aqueous pigmented inks for ink-jet printing
Inventors:
Charles Edward Akers, Jr., Terence E. Franey, Jing X. Sun, Carla M. Butler
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Aug 3, 2001
Inventors
Charles Edward Akers, Jr.
Terence E. Franey
Jing X. Sun
Carla M. Butler
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.