Granted Patent
Utility
US 6,770,171 · App. 10/168,490
Method and system for controlling headbox in a paper/board machine
Inventors:
Jari Hamalainen, Hannu Lepomäki, Juhana Lumiala, Pasi Sirviö
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Oct 9, 2002
Inventors
Jari Hamalainen
Hannu Lepomäki
Juhana Lumiala
Pasi Sirviö
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.