Granted Patent
Utility
US 5,242,602 · App. 07/845,889
Spectrophotometric monitoring of multiple water treatment performance indicators using chemometrics
Inventors:
John Richardson, Larry M. Kye, Mark D. Brickhouse, Gary G. Engstrom, Kenneth J. Schlager, Scott J. Kahle, John A. Kelly
Patented Case
View Patent ↗
Granted: Sep 7, 1993
Filed: Mar 4, 1992
Inventors
John Richardson
Larry M. Kye
Mark D. Brickhouse
Gary G. Engstrom
Kenneth J. Schlager
Scott J. Kahle
John A. Kelly
Assignees (at issue)
W.R. Grace & Co. Conn.
Biotronics Technology, 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.