Granted Patent
Utility
US 5,290,608 · App. 08/097,138
Method for forming a patterned mask
Inventors:
John Grunwald, Gary B. Larson
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Jul 26, 1993
Inventors
John Grunwald
Gary B. Larson
Assignee (at issue)
MacDermid, Incorporated
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.