Granted Patent
Utility
US 4,783,556 · App. 07/125,931
Tetrabromobisphenol-A process
Inventors:
Olan Wayne Mitchell, Bonnie G. McKinnie
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Nov 27, 1987
Inventors
Olan Wayne Mitchell
Bonnie G. McKinnie
Assignee (at issue)
Ethyl 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.