Granted Patent
Utility
US 5,668,185 · App. 08/461,716
Method of making an amine containing biocidal composition
Inventor:
Stephen T. Wellinghoff
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Jun 5, 1995
Inventor
Stephen T. Wellinghoff
Assignee (at issue)
SOUTHWEST RESEARCH INSTITUTE
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.