Granted Patent
Utility
US 6,113,989 · App. 09/046,354
Aqueous paint additive for staining inhibition and procedures
Inventor:
John Sinko
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Mar 23, 1998
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.