Granted Patent
Utility
US 5,338,813 · App. 08/185,081
Copolymers of vinyl dioxolanes and maleimides
Inventors:
Richard W. Blevins, S. Richard Turner
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Jan 24, 1994
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.