Granted Patent
Utility
US 5,453,471 · App. 08/284,797
Gas phase polymerization process
Inventors:
Robert J. N. Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Leonard S. Scarola, Gary Harry Williams
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Aug 2, 1994
Inventors
Robert J. N. Bernier
Robert Lorenz Boysen
Robert Cecil Brown
Leonard S. Scarola
Gary Harry Williams
Assignee (at issue)
Union Carbide Chemicals & Plastics Technology LLC
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.