Granted Patent
Utility
US 5,043,492 · App. 07/569,867
Method for producing hexabromocyclododecane
Inventor:
George H. Ransford
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Aug 20, 1990
Inventor
George H. Ransford
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.