Granted Patent
Utility
US 4,428,862 · App. 06/267,247
Catalyst for simultaneous hydrotreating and hydrodewaxing of hydrocarbons
Inventors:
John W. Ward, Timothy Carlson
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: May 26, 1981
Inventors
John W. Ward
Timothy Carlson
Assignee (at issue)
Union Oil Company of California
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.