Granted Patent
Utility
US 4,649,202 · App. 06/715,005
Brominative aromatization of 4-cyclohexenylpyridines
Inventors:
Paul F. Ranken, Venkataraman Ramachandran
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Mar 22, 1985
Inventors
Paul F. Ranken
Venkataraman Ramachandran
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.