Granted Patent
Utility
US 4,339,239 · App. 06/161,618
Use of heteropolysaccharide S-119 as an antimigrant
Inventor:
Joseph S. Racciato
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Jun 20, 1980
Inventor
Joseph S. Racciato
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.