Granted Patent
Utility
US 5,296,130 · App. 08/001,300
Hydrocracking of heavy asphaltenic oil in presence of an additive to prevent coke formation
Inventors:
Jaroslav Kriz, Marten Ternan
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Jan 6, 1993
Inventors
Jaroslav Kriz
Marten Ternan
Assignee (at issue)
Energy Mines & Resources-Canada
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.