Granted Patent
Utility
US 4,384,156 · App. 06/355,177
Method for promoting aluminum chloride catalyzed isomerization of sym-octahydrophenanthrene to sym-octahydroanthracene with aroyl halide
Inventor:
William T. Gormley
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Mar 5, 1982
Inventor
William T. Gormley
Assignee (at issue)
KOPPERS, INC.
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.