Granted Patent
Utility
US 6,106,756 · App. 09/318,971
Preparation of high solids poly(vinyl alcohol)/water solutions in a single screw extruder
Inventors:
Stephen Dennis Janny, Brian Carvill, Timothy W. Womer
Patented Case
View Patent ↗
Granted: Aug 22, 2000
Filed: May 26, 1999
Inventors
Stephen Dennis Janny
Brian Carvill
Timothy W. Womer
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.