Granted Patent
Utility
US 4,966,780 · App. 07/358,927
Packaging of fresh roasted coffee exhibiting improved aroma retention
Inventors:
Peter Hargraves, Robert S. Dirksing, Theodore P. Merz
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: May 26, 1989
Inventors
Peter Hargraves
Robert S. Dirksing
Theodore P. Merz
Assignee (at issue)
The Procter & Gamble Company
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.