Granted Patent
Utility
US 5,473,086 · App. 08/373,666
Process for the hydrogenation of maleic acid to 1,4-butanediol
Inventors:
John R. Budge, Thomas G. Attig, S. Erik Pedersen
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jan 17, 1995
Inventors
John R. Budge
Thomas G. Attig
S. Erik Pedersen
Assignee (at issue)
The Standard Oil Company
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.