Granted Patent
Utility
US 5,491,272 · App. 08/121,864
Method for oligomerizing an alpha-olefin
Inventors:
Eiji Tanaka, Hisao Urata, Toshiyuki Oshiki
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Sep 17, 1993
Inventors
Eiji Tanaka
Hisao Urata
Toshiyuki Oshiki
Assignee (at issue)
MITSUBISHI CHEMICAL CORPORATION
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.