Granted Patent
Utility
US 4,704,491 · App. 06/843,556
Liquid ethylene-alpha-olefin random copolymer, process for production thereof, and use thereof
Inventors:
Toshiyuki Tsutsui, Mamoru Kioka, Akinori Toyota, Norio Kashiwa
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Mar 25, 1986
Inventors
Toshiyuki Tsutsui
Mamoru Kioka
Akinori Toyota
Norio Kashiwa
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.