Granted Patent
Utility
US 4,426,481 · App. 06/285,936
Polymeric matrix containing .beta.-eliminating polymer and process for preparing same
Inventor:
Charles I. Sullivan
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Jul 23, 1981
Inventor
Charles I. Sullivan
Assignee (at issue)
Polaroid Corporation
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.