Granted Patent
Utility
US 4,935,569 · App. 07/373,247
Alpha-olefin process
Inventors:
Alvin E. Harkins, Jr., Layne W. Summers
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Jun 29, 1989
Inventors
Alvin E. Harkins, Jr.
Layne W. Summers
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.