Granted Patent
Utility
US 6,432,275 · App. 09/622,336
Headbox of a paper/board machine by whose means the basis weight of the web can be regulated
Inventors:
Jyrki Huovila, Petri Nyberg, Antti Suoperä, Tapani Nyman
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Aug 11, 2000
Inventors
Jyrki Huovila
Petri Nyberg
Antti Suoperä
Tapani Nyman
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.