Granted Patent
Utility
US 5,084,213 · App. 07/487,841
Mixed halogenation of cyclododecatriene
Inventor:
Paul F. Ranken
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Mar 5, 1990
Inventor
Paul F. Ranken
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.