Granted Patent
Utility
US 6,790,445 · App. 09/019,764
Preservatives for vaccines
Inventors:
Assunta S. Ng, Ralph J. Mancinelli, John P. Hennessey, Jr.
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Feb 6, 1998
Inventors
Assunta S. Ng
Ralph J. Mancinelli
John P. Hennessey, Jr.
Assignee (at issue)
MERCK & CO., 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.