Granted Patent
Utility
US 5,338,921 · App. 08/017,808
Method of distributing heat in food containers adapted for microwave cooking and novel container structure
Inventors:
David Maheux, Robert G. Tomich
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Feb 16, 1993
Inventors
David Maheux
Robert G. Tomich
Assignee (at issue)
Universal Packaging 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.