Granted Patent
Utility
US 5,283,375 · App. 07/990,414
Process for high purity tetrabromobisphenol-A
Inventors:
Bonnie G. McKinnie, Gary L. Sharp, Robert E. Williams
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Dec 15, 1992
Inventors
Bonnie G. McKinnie
Gary L. Sharp
Robert E. Williams
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.