Granted Patent
Utility
US 5,744,063 · App. 08/801,313
Higher purity imidazoline based amphoacetate surfactants and processes for the preparation thereof
Inventors:
Bharat Desai, Peter Lees, Jean-Marc Ricca, David J. Tracy
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Feb 18, 1997
Inventors
Bharat Desai
Peter Lees
Jean-Marc Ricca
David J. Tracy
Assignee (at issue)
Rhone-Poulenc, Inc.
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.