Granted Patent
Utility
US 4,731,492 · App. 07/021,754
Phenol alkylation process
Inventors:
Steven L. Wiker, S. Wendell Holmes, JR., Dixie E. Goins
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Mar 4, 1987
Inventors
Steven L. Wiker
S. Wendell Holmes, JR.
Dixie E. Goins
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.