Granted Patent
Utility
US 6,790,664 · App. 10/033,756
Fluorometric monitoring and control of soluble hardness of water used in industrial water systems
Inventors:
Bruce R. Bailey, Xiaojun Dang, David A. Grattan, Linda Link
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Dec 28, 2001
Inventors
Bruce R. Bailey
Xiaojun Dang
David A. Grattan
Linda Link
Assignee (at issue)
Nalco Company LLC
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.