Granted Patent
Utility
US 4,286,109 · App. 06/174,078
High density fuel compositions
Inventors:
Richard V. Norton, Dennis H. Fisher
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Jul 31, 1980
Inventors
Richard V. Norton
Dennis H. Fisher
Assignee (at issue)
Ashland Oil, 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.