Granted Patent
Utility
US 6,427,421 · App. 09/627,728
Method of manufacturing recloseable packages
Inventors:
Kirk E. Belmont, Ian J. Barclay
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jul 28, 2000
Inventors
Kirk E. Belmont
Ian J. Barclay
Assignee (at issue)
PACTIV LLC
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.