Granted Patent
Utility
US 4,401,560 · App. 06/394,301
Process for the separation of aromatic hydrocarbons from petroleum fractions with heat recovery
Inventors:
Jose A. Vidueira, Paulino Forte, Kenneth F. Butwell
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Jul 1, 1982
Inventors
Jose A. Vidueira
Paulino Forte
Kenneth F. Butwell
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.