Granted Patent
Utility
US 5,540,242 · App. 08/088,516
Cigarette paper having reduced sidestream properties
Inventors:
Li-Chung Chao, Jiunn-Yang Tang, Frank Kelley St. Charles, Steven Houpt
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Jul 7, 1993
Inventors
Li-Chung Chao
Jiunn-Yang Tang
Frank Kelley St. Charles
Steven Houpt
Assignee (at issue)
Brown & Williamson Tobacco Corporation
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.