Granted Patent
Utility
US 4,423,262 · App. 06/130,119
Preparation of dibromostyrene
Inventor:
Philip F. Jackisch
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Mar 13, 1980
Inventor
Philip F. Jackisch
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.