Granted Patent
Utility
US 6,139,610 · App. 09/319,231
Hybrid pigment grade corrosion inhibitor compositions and procedures
Inventor:
John Sinko
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Jun 3, 1999
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.