Granted Patent
Utility
US 5,221,730 · App. 07/614,320
Polyesters from terephthalic acid, 2,6-naphthalenedicarboxylic acid and hydroquinone
Inventors:
John C. Morris, Winston J. Jackson, Jr., James Rodney Bradley
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Nov 16, 1990
Inventors
John C. Morris
Winston J. Jackson, Jr.
James Rodney Bradley
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.