Granted Patent
Utility
US 4,257,768 · App. 05/959,121
Novel blend of algin and TKP
Inventors:
Joseph S. Racciato, Robert Yin
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Nov 9, 1978
Inventors
Joseph S. Racciato
Robert Yin
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.