Granted Patent
Utility
US 6,346,167 · App. 09/764,297
Dissolved solids control in pulp production
Inventors:
Bruno Marcoccia, J. Robert Prough, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen, R. Fred Chasse
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Jan 19, 2001
Inventors
Bruno Marcoccia
J. Robert Prough
Richard O. Laakso
Joseph R. Phillips
Rolf Ryham
Jan T. Richardsen
R. Fred Chasse
Assignee (at issue)
Andritz-Ahlstrom 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.