Granted Patent
Utility
US 6,475,288 · App. 09/762,738
Smoke-modifying agents and smoking material rods comprising smoke-modifying agents
Inventor:
Richard Oliver
Patented Case
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Granted: Nov 5, 2002
Filed: Feb 12, 2001
Inventor
Richard Oliver
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.