Granted Patent
Utility
US 4,486,489 · App. 06/427,325
Films of hydrophilic interpolymers of neutralized acrylic acid, hydroxyalkyl methacrylate or dialkylaminoalkyl (meth)acrylate and optionally a cross-linking agent
Inventor:
Paul George
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Sep 29, 1982
Inventor
Paul George
Assignee (at issue)
B. F. Goodrich 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.