Granted Patent
Utility
US 5,310,839 · App. 07/998,205
Copolymers of vinyl dioxolanes and maleimides
Inventors:
Richard W. Blevins, S. Richard Turner
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Dec 30, 1992
Inventors
Richard W. Blevins
S. Richard Turner
Assignee (at issue)
Eastman Chemical 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.