Granted Patent
Utility
US 4,134,959 · App. 05/826,009
Azole-phosphate corrosion inhibiting composition and method
Inventors:
Russell O. Menke, Jose T. Jacob, Chih M. Hwa
Patented Case
View Patent ↗
Granted: Jan 16, 1979
Filed: Aug 19, 1977
Inventors
Russell O. Menke
Jose T. Jacob
Chih M. Hwa
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.