Granted Patent
Utility
US 6,740,198 · App. 10/116,285
Method and arrangement for mixing pulp components in the manufacture of paper
Inventors:
Jussi Ahola, Elina Pohjala, Sakari Soini, Veli-Matti Rajala, Kati Lindroos, Petri Nyberg, Pentti Saarenrinne
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Apr 4, 2002
Inventors
Jussi Ahola
Elina Pohjala
Sakari Soini
Veli-Matti Rajala
Kati Lindroos
Petri Nyberg
Pentti Saarenrinne
Assignee (at issue)
Metso Paper 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.