Granted Patent
Utility
US 6,425,974 · App. 09/380,335
Process for treating wastewater from a bleach plant
Inventors:
Patrick S. Bryant, Jiri Basta
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Nov 8, 1999
Inventors
Patrick S. Bryant
Jiri Basta
Assignee (at issue)
AKZO NOBEL N.V.
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.