Granted Patent
Utility
US 5,519,112 · App. 08/360,601
Method of manufacturing polyesters
Inventors:
Hirofumi Harazoe, Masamitsu Matsuno, Seiji Noda
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Dec 21, 1994
Inventors
Hirofumi Harazoe
Masamitsu Matsuno
Seiji Noda
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.