Granted Patent
Utility
US 6,007,679 · App. 09/172,568
Papermaking process
Inventors:
R. Nagarajan, Jane B. Wong Shing
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Oct 14, 1998
Inventors
R. Nagarajan
Jane B. Wong Shing
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.