Granted Patent
Utility
US 6,409,912 · App. 09/476,965
Integration of solvent deasphalting, gasification, and hydrotreating
Inventors:
Paul Steven Wallace, Kay A. Johnson
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Jan 11, 2000
Inventors
Paul Steven Wallace
Kay A. Johnson
Assignee (at issue)
Texaco Inc.
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.