Granted Patent
Utility
US 5,501,802 · App. 08/311,834
Method for treating water using an organic sanitizer and a persulfate
Inventors:
Dean S. Thorp, Frank E. Caropreso, Robert H. Tieckelmann, Donald Lapham
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Sep 23, 1994
Inventors
Dean S. Thorp
Frank E. Caropreso
Robert H. Tieckelmann
Donald Lapham
Assignee (at issue)
FMC 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.