Granted Patent
Utility
US 6,159,336 · App. 08/960,012
Method and device for the continuous cooking of pulp
Inventors:
Johan Engstrom, Vidar Snekkenes, Krister Olsson, Mikael Lindstrom, Christofer Lindgren, Soren Gustavsson
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Oct 29, 1997
Inventors
Johan Engstrom
Vidar Snekkenes
Krister Olsson
Mikael Lindstrom
Christofer Lindgren
Soren Gustavsson
Assignee (at issue)
Kvaerner Pulping AB
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.