Granted Patent
Utility
US 6,214,950 · App. 09/388,288
Process for preparation of polyolefin using an olefin polymerization catalyst
Inventor:
Nozaki Takashi
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Sep 1, 1999
Inventor
Nozaki Takashi
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.