Granted Patent
Utility
US 6,722,130 · App. 09/831,172
Method of producing process steam from a black liquor
Inventors:
Vidar Snekkenes, Lennart Gustavsson, Per Johan Anders Nyström
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: May 4, 2001
Inventors
Vidar Snekkenes
Lennart Gustavsson
Per Johan Anders Nyström
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.