Granted Patent
Utility
US 4,528,994 · App. 06/562,254
Tobacco treating process
Inventors:
Kevin R. Korte, Dan T. Wu
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Dec 16, 1983
Inventors
Kevin R. Korte
Dan T. Wu
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.