Granted Patent
Utility
US 6,712,970 · App. 10/331,270
Sewage treatment process with phosphorus removal
Inventor:
Hiren Trivedi
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Dec 30, 2002
Inventor
Hiren Trivedi
Assignee (at issue)
Enviroquip 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.