Granted Patent
Utility
US 5,266,409 · App. 07/344,990
Hydrogenated carbon compositions
Inventors:
Paul H. Schmidt, John C. Angus
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Apr 28, 1989
Inventors
Paul H. Schmidt
John C. Angus
Assignees (at issue)
Digital Equipment Corporation
Case Western Reserve University
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.