Granted Patent
Utility
US 5,204,429 · App. 07/228,543
Process for the preparation of an olefin polymer
Inventors:
Walter Kaminsky, Regina Spiehl
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Aug 4, 1988
Inventors
Walter Kaminsky
Regina Spiehl
Assignee (at issue)
Hoechst GmbH
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.