Granted Patent
Utility
US 5,264,546 · App. 07/870,480
Copolymer production
Inventors:
Alistair J. Anderson, Edwin A. Dawes, Geoffrey W. Haywood, David Byrom
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Apr 17, 1992
Inventors
Alistair J. Anderson
Edwin A. Dawes
Geoffrey W. Haywood
David Byrom
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.