Granted Patent
Utility
US 6,261,381 · App. 09/710,976
Composition and process for cleaning inks from various substrates including printing plates
Inventor:
Gerald Wojcik
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Nov 9, 2000
Inventor
Gerald Wojcik
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.