Granted Patent
Utility
US 5,292,811 · App. 08/033,432
Process for preparing thermoplastic elastomers
Inventors:
Kazuhiko Murata, Shizuo Shimizu, Mamoru Kioka, Akinori Toyota
Patented Case
View Patent ↗
Granted: Mar 8, 1994
Filed: Mar 18, 1993
Inventors
Kazuhiko Murata
Shizuo Shimizu
Mamoru Kioka
Akinori Toyota
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.