Granted Patent
Utility
US 4,482,715 · App. 06/352,813
Process for the prevention or reduction of discoloration of sodium or zinc pyrithione
Inventors:
Samuel I. Trotz, Douglas A. Farmer, Jr.
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Feb 26, 1982
Inventors
Samuel I. Trotz
Douglas A. Farmer, Jr.
Assignee (at issue)
Olin Corporation
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.