Granted Patent
Utility
US 6,730,739 · App. 10/154,357
Cling film with enhanced polyisobutylene tackifier
Inventor:
Betty L. Gipson
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: May 23, 2002
Inventor
Betty L. Gipson
Assignee (at issue)
Texas Petrochemicals 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.