Granted Patent
Utility
US 4,740,293 · App. 06/696,417
Premium coke from a blend of pyrolysis tar and hydrotreated decant oil
Inventors:
Eric M. Dickinson, Arthur Moore
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Jan 30, 1985
Inventors
Eric M. Dickinson
Arthur Moore
Assignee (at issue)
Union Carbide 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.