Granted Patent
Utility
US 6,676,806 · App. 09/685,239
Process for increasing the wet strength of porous plug wraps for use in smoking articles
Inventor:
Jon R. Butt, Sr.
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Oct 10, 2000
Inventor
Jon R. Butt, Sr.
Assignee (at issue)
Schweitzer Mauduit International, 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.