Granted Patent
Utility
US 6,367,481 · App. 09/498,343
Cigarette having reduced sidestream smoke
Inventors:
Walter A. Nichols, John R. Hearn, F. Murphy Sprinkel, Jr., Jay A Fournier, Jerry F. Whidby
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Feb 4, 2000
Inventors
Walter A. Nichols
John R. Hearn
F. Murphy Sprinkel, Jr.
Jay A Fournier
Jerry F. Whidby
Assignee (at issue)
Philip Morris 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.