Granted Patent
Utility
US 6,787,196 · App. 10/695,896
Apparatus for making a web of paper or board containing calcium carbonate
Inventors:
Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Gronroos, Pentti Virtanen, Veli Käsmä, Hannu Niemela
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Oct 29, 2003
Inventors
Vilho Nissinen
Timo Nyberg
Pasi Rajala
Lars Gronroos
Pentti Virtanen
Veli Käsmä
Hannu Niemela
Assignee (at issue)
Metso Paper Oy
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.