Granted Patent
Utility
US 6,447,087 · App. 09/972,570
Method for driving an ink jet print head of a printing apparatus
Inventors:
Chih-Hung Kao, Yu-Fan Fang
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Oct 9, 2001
Inventors
Chih-Hung Kao
Yu-Fan Fang
Assignee (at issue)
Acer Communications and Multimedia 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.