Granted Patent
Utility
US 5,948,147 · App. 08/942,586
Synergistic pigment grade corrosion inhibitor compositions and procedures
Inventor:
John Sinko
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Oct 2, 1997
Inventor
John Sinko
Assignee (at issue)
WAYNE PIGMENT 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.