Granted Patent
Utility
US 5,296,565 · App. 08/042,393
Olefin polymerization catalyst and olefin polymerization
Inventors:
Takashi Ueda, Okawa Kazunori
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Apr 2, 1993
Inventors
Takashi Ueda
Okawa Kazunori
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.