Granted Patent
Utility
US 5,350,801 · App. 08/089,067
Solid state process for modification of polyvinyl alcohol using Michael-type addition
Inventors:
Amir Famili, Lori A. Vratsanos, Finn L. Marten
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Jul 7, 1993
Inventors
Amir Famili
Lori A. Vratsanos
Finn L. Marten
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.