Granted Patent
Utility
US 6,369,010 · App. 09/452,820
Method and composition for preventing pitch deposits in paper mills using resinous mechanical pulps
Inventors:
David D. Dreisbach, Jeffrey N. Champine
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Dec 1, 1999
Inventors
David D. Dreisbach
Jeffrey N. Champine
Assignee (at issue)
Vinings Industries, Inc.
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.