Granted Patent
Utility
US 5,508,378 · App. 08/375,286
Method for producing polylactic acid
Inventors:
Hitomi Ohara, Seiji Sawa, Tatsushi Kawamoto
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Jan 20, 1995
Inventors
Hitomi Ohara
Seiji Sawa
Tatsushi Kawamoto
Assignee (at issue)
SHIMADZU CORPORATION
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.