Granted Patent
Utility
US 6,815,504 · App. 10/357,591
Pressure sensitive adhesive formulation including enhanced polyisobutylene modifier
Inventor:
Betty L. Gipson
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Feb 4, 2003
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.