Granted Patent
Utility
US 5,607,709 · App. 07/800,159
Disposable microwavable food container
Inventors:
Jill A. Fritz, Darryl P. Hansen
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Nov 27, 1991
Inventors
Jill A. Fritz
Darryl P. Hansen
Assignee (at issue)
Tenneco Plastics 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.