Granted Patent
Utility
US 5,768,913 · App. 08/843,448
Process based mixed refrigerants for ethylene plants
Inventors:
Richard H. McCue, Jr., Mark Whitney, John L. Pickering, Jr., David H. Chen
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Apr 16, 1997
Inventors
Richard H. McCue, Jr.
Mark Whitney
John L. Pickering, Jr.
David H. Chen
Assignee (at issue)
Stone & Webster Engineering Corp.
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.