Granted Patent
Utility
US 4,581,145 · App. 06/709,979
Composition and method for inhibiting scale
Inventors:
Dionisio G. Cuisia, Chih M. Hwa, Anne H. Kemp
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Mar 11, 1985
Inventors
Dionisio G. Cuisia
Chih M. Hwa
Anne H. Kemp
Assignee (at issue)
Dearborn Chemical Company Limited
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.