Granted Patent
Utility
US 4,665,140 · App. 06/715,271
Process for polymerizing a monomer charge
Inventors:
B. Timothy Pennington, Paul V. Roling, John T. T. Hsieh
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Mar 25, 1985
Inventors
B. Timothy Pennington
Paul V. Roling
John T. T. Hsieh
Assignee (at issue)
Cities Service Oil and Gas Corporation
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.