Granted Patent
Utility
US 6,779,440 · App. 10/203,571
Method and device changing the vapor pressure inside the paper web in calendering
Inventors:
Koivukunnas Pekka, Hannamari Härkönen, Risto Talja
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Oct 29, 2002
Inventors
Koivukunnas Pekka
Hannamari Härkönen
Risto Talja
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.