Granted Patent
Utility
US 5,004,847 · App. 07/457,960
Recovery of hexabromocyclododecane particles
Inventors:
Phillip R. Beaver, Peter M. DiGiacinto, Donald O. Hutchinson, Julio J. Vega
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Dec 27, 1989
Inventors
Phillip R. Beaver
Peter M. DiGiacinto
Donald O. Hutchinson
Julio J. Vega
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.