Granted Patent
Utility
US 5,281,446 · App. 07/741,757
Methods for coating paper board containers
Inventors:
Derek S. Matheson, Wesley R. Bush, Carlton L. Kemmet, Donald C. Lundgren, David W. Norwood, Robert Brown, Romano Balordi, Onisim Kransnokutsky
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Aug 7, 1991
Inventors
Derek S. Matheson
Wesley R. Bush
Carlton L. Kemmet
Donald C. Lundgren
David W. Norwood
Robert Brown
Romano Balordi
Onisim Kransnokutsky
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.