Granted Patent
Utility
US 5,183,944 · App. 07/798,159
Method of doping aqueous solutions with acrolein in biocidally effective concentration
Inventors:
Peter Werle, Martin Trageser, Hermann Piana
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Nov 26, 1991
Inventors
Peter Werle
Martin Trageser
Hermann Piana
Assignee (at issue)
Degussa AG
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.