Granted Patent
Utility
US 6,423,880 · App. 09/596,456
Isopentane disproportionation
Inventors:
Bruce B. Randolph, Kenneth C. Hoover, Martyn E. Pfile
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jun 19, 2000
Inventors
Bruce B. Randolph
Kenneth C. Hoover
Martyn E. Pfile
Assignee (at issue)
Phillips Petroleum 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.