Granted Patent
Utility
US 6,440,533 · App. 09/667,383
PVC replacement film
Inventors:
Carl Douglas Ray, James P. DiPoto, Shailesh Chunilal Patel
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Sep 22, 2000
Inventors
Carl Douglas Ray
James P. DiPoto
Shailesh Chunilal Patel
Assignee (at issue)
TREDEGAR FILM PRODUCTS 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.