Granted Patent
Utility
US 5,137,969 · App. 07/402,200
Melt extrudable polyvinyl alcohol pellets having reduced maximum melt temperature and reduced gel content
Inventors:
F. Lennart Marten, Amir Famili, James F. Nangeroni
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Sep 1, 1989
Inventors
F. Lennart Marten
Amir Famili
James F. Nangeroni
Assignee (at issue)
Air Products and Chemicals, Inc.
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.