Granted Patent
Utility
US 6,468,716 · App. 09/521,909
Cover film for dry film resist
Inventors:
Takeshi Sugie, Takatoshi Miki
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Mar 9, 2000
Inventors
Takeshi Sugie
Takatoshi Miki
Assignee (at issue)
Mitsubishi Polyester Film GmbH
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.