Granted Patent
Utility
US 5,342,902 · App. 08/117,588
Poly(ester-ether) compositions having increased thermal stability
Inventors:
W. Ronald Darnell, W. James Jackson
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Sep 7, 1993
Inventors
W. Ronald Darnell
W. James Jackson
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.