Granted Patent
Utility
US 5,084,585 · App. 07/639,002
Process for preparation of aluminoxane
Inventors:
Hiroshi Maezawa, Norio Tomotsu
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Jan 9, 1991
Inventors
Hiroshi Maezawa
Norio Tomotsu
Assignee (at issue)
IDEMITSU KOSAN CO., 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.