Granted Patent
Utility
US 6,358,364 · App. 09/839,016
Method for flocculating a papermaking furnish using colloidal borosilicates
Inventors:
Bruce A. Keiser, James E. Whitten
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Apr 22, 2001
Inventors
Bruce A. Keiser
James E. Whitten
Assignee (at issue)
Nalco Chemical 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.