Granted Patent
Utility
US 4,340,645 · App. 06/262,086
Leadless glazes for whiteware
Inventor:
Eugene F. O'Conor
Patented Case
View Patent ↗
Granted: Jul 20, 1982
Filed: May 11, 1981
Inventor
Eugene F. O'Conor
Assignee (at issue)
Mobay Chemical 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.