Granted Patent
Utility
US 4,791,043 · App. 07/040,710
Positive photoresist stripping composition
Inventors:
Evan G. Thomas, Edmund W. Smalley, Kane D. Cook
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Apr 17, 1987
Inventors
Evan G. Thomas
Edmund W. Smalley
Kane D. Cook
Assignee (at issue)
HMC Patents Holding Co., 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.