Granted Patent
Utility
US 4,828,795 · App. 07/064,724
Systems inhibited against corrosion and/or scale deposition
Inventors:
Barry Cook, Norman Richardson, Joseph Tames
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Jun 22, 1987
Inventors
Barry Cook
Norman Richardson
Joseph Tames
Assignee (at issue)
Ciba-Geigy
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.