Granted Patent
Utility
US 6,667,178 · App. 09/850,625
Optimization of caustic usage
Inventor:
Robert W. Emblidge
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: May 7, 2001
Inventor
Robert W. Emblidge
Assignee (at issue)
Sunoco, Inc. (R&M)
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.