Granted Patent
Utility
US 5,254,652 · App. 07/813,887
Terpolymers of ethylene, their preparation, and their use as additives for mineral oil distillates
Inventors:
Werner Reimann, Michael Feustel, John Hobes
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Dec 23, 1991
Inventors
Werner Reimann
Michael Feustel
John Hobes
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.