Granted Patent
Utility
US 3,959,167 · App. 05/423,610
Method and composition of inhibiting scale
Inventors:
Chih M. Hwa, Dionisio G. Cuisia, Murrell L. Salutsky
Patented Case
View Patent ↗
Granted: May 25, 1976
Filed: Dec 10, 1973
Inventors
Chih M. Hwa
Dionisio G. Cuisia
Murrell L. Salutsky
Assignee (at issue)
Chemed Corporation
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.