Granted Patent
Utility
US 4,604,404 · App. 06/719,296
Antiviral sulfonated naphthalene formaldehyde condensation polymers
Inventors:
Harry R. Munson, Jr., Robert W. Tankersley, Jr.
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Apr 3, 1985
Inventors
Harry R. Munson, Jr.
Robert W. Tankersley, Jr.
Assignee (at issue)
A. H. Robins Company, Incorporated
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.