Granted Patent
Utility
US 5,310,800 · App. 07/860,192
Thermoplastic elastomer
Inventors:
Shizuo Shimizu, Akira Uchiyama, Kunihide Hiraoka, Katsuo Okamoto, Yasuhiko Otawa
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Mar 26, 1992
Inventors
Shizuo Shimizu
Akira Uchiyama
Kunihide Hiraoka
Katsuo Okamoto
Yasuhiko Otawa
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.