Granted Patent
Utility
US 6,558,879 · App. 09/668,929
Photoresist stripper/cleaner compositions containing aromatic acid inhibitors
Inventors:
Darryl Peters, Floyd Riddle
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Sep 25, 2000
Inventors
Darryl Peters
Floyd Riddle
Assignee (at issue)
Ashland, 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.