Granted Patent
Utility
US 5,085,366 · App. 07/722,314
High gloss paper cup
Inventors:
Ronald A. Durgin, Derek S. Matheson, Delvin K. Border, Carlton L. Kennet, Daniel E. Hammett
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Jun 27, 1991
Inventors
Ronald A. Durgin
Derek S. Matheson
Delvin K. Border
Carlton L. Kennet
Daniel E. Hammett
Assignee (at issue)
Sweetheart Cup Company Inc.
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.