Granted Patent
Utility
US 6,548,571 · App. 09/385,909
Ink compositions and processes
Inventors:
Chieh-Min Cheng, Min-Hong Fu
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Aug 30, 1999
Inventors
Chieh-Min Cheng
Min-Hong Fu
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.