Granted Patent
Utility
US 6,830,689 · App. 10/429,556
Process for removing phosphorus from wastewater utilizing a triple basin wastewater treatment system
Inventors:
Sun-Nam Hong, Hong Zhao, Richard W. DiMassimo
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: May 5, 2003
Inventors
Sun-Nam Hong
Hong Zhao
Richard W. DiMassimo
Assignee (at issue)
United States Filter Corporation
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.