Granted Patent
Utility
US 6,063,725 · App. 08/743,374
Olefin polymerization catalyst system
Inventors:
Tadahiro Sunaga, Yukio Ishii, Tadashi Asanuma
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Nov 4, 1996
Inventors
Tadahiro Sunaga
Yukio Ishii
Tadashi Asanuma
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.