Granted Patent
Utility
US 4,579,757 · App. 06/455,847
Plastic containers for use in packaging and thermal processing of comestibles
Inventors:
Cheh-Jen Su, Boh C. Tsai, James A. Wachtel
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Jan 5, 1983
Inventors
Cheh-Jen Su
Boh C. Tsai
James A. Wachtel
Assignee (at issue)
American Can 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.