Granted Patent
Utility
US 6,013,185 · App. 08/936,826
Recovery and reuse of nonionic surfactants from aqueous solutions
Inventors:
Mark Ventura, Manilal S. Dahanayake
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Sep 25, 1997
Inventors
Mark Ventura
Manilal S. Dahanayake
Assignee (at issue)
Rhodia, 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.