Granted Patent
Utility
US 5,821,322 · App. 08/851,260
Diaminoalkyl quaternary ammonium salts and method for their preparation and use
Inventors:
Daniel J. Brunelle, Peter D. Phelps, Eugene Pauling Boden, Mark Erik Nelson, Larry I. Flowers, Paul Dean Sybert, Erik Hendrick Adriaan Capelle
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: May 5, 1997
Inventors
Daniel J. Brunelle
Peter D. Phelps
Eugene Pauling Boden
Mark Erik Nelson
Larry I. Flowers
Paul Dean Sybert
Erik Hendrick Adriaan Capelle
Assignee (at issue)
General Electric Company
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.