Granted Patent
Utility
US 5,510,180 · App. 08/126,213
Polypropylene laminates
Inventors:
Yao-Ching Liu, Ray Edwards
Patented Case
View Patent ↗
Granted: Apr 23, 1996
Filed: Sep 23, 1993
Inventors
Yao-Ching Liu
Ray Edwards
Assignee (at issue)
Eastman Chemical Company
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.