Granted Patent
Utility
US 6,641,699 · App. 10/011,468
Chemical wood pulping process with reduced pitch and VOC emissions
Inventors:
Jerry R. Speaks, Roger O. Campbell, Michael A. Veal
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Nov 6, 2001
Inventors
Jerry R. Speaks
Roger O. Campbell
Michael A. Veal
Assignee (at issue)
Weyerhauser Company
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.