Granted Patent
Utility
US 6,610,209 · App. 09/899,675
Use of polymers containing vinylamine/vinylformamide for the treatment of food processing wastewater
Inventors:
Anthony G. Sommese, Daniel K. Chung
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Jul 5, 2001
Inventors
Anthony G. Sommese
Daniel K. Chung
Assignee (at issue)
Ondeo Nalco 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.