Granted Patent
Utility
US 4,521,585 · App. 06/509,532
Polyesters and their manufacture from acids and glycol carbonates
Inventors:
Joelle R. Thomsen, David R. Fagerburg
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Jun 30, 1983
Inventors
Joelle R. Thomsen
David R. Fagerburg
Assignee (at issue)
EASTMAN KODAK 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.