Granted Patent
Utility
US 4,752,318 · App. 06/865,719
Aqueous system treated with a biocide
Inventors:
Joachim Lorenz, Reinhardt Grade
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: May 22, 1986
Inventors
Joachim Lorenz
Reinhardt Grade
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.