Granted Patent
Utility
US 5,885,414 · App. 08/914,385
Method of producing pulp with high alkali cooking in the last cooking stage
Inventors:
Mikael Lindstrom, Christofer Lindgren
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Aug 18, 1997
Inventors
Mikael Lindstrom
Christofer Lindgren
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.