Granted Patent
Utility
US 6,312,604 · App. 09/178,220
Lanthanide halide water treatment compositions and methods
Inventors:
Raymond P. Denkewicz, Jr., Ernest Senderov, Joseph W. Grenier, Therese R. Souza
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Oct 23, 1998
Inventors
Raymond P. Denkewicz, Jr.
Ernest Senderov
Joseph W. Grenier
Therese R. Souza
Assignee (at issue)
Zodiac Pool Care, 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.