Granted Patent
Utility
US 5,296,587 · App. 08/034,963
Copolymerization of dicarboxylic acids and dialkyl esters of dicarboxylic acids to form polyesters
Inventors:
Charles Edwan Sumner, Jr., Gary Darrel Boone
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Mar 22, 1993
Inventors
Charles Edwan Sumner, Jr.
Gary Darrel Boone
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.