Granted Patent
Utility
US 6,749,980 · App. 10/152,369
Toner processes
Inventors:
Chieh-Min Cheng, Allan K. Chen
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: May 20, 2002
Inventors
Chieh-Min Cheng
Allan K. Chen
Assignee (at issue)
Xerox 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.