Granted Patent
Utility
US 6,818,142 · App. 10/404,200
Potassium hydrogen peroxymonosulfate solutions
Inventors:
Thomas Peter Tufano, Michael Coxey
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Mar 31, 2003
Inventors
Thomas Peter Tufano
Michael Coxey
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.