Granted Patent
Utility
US 4,564,516 · App. 06/510,908
Ammonia-based catalyst for water-gas shift reaction
Inventors:
Douglas C. Elliott, L. John Sealock, Jr., Richard T. Hallen
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Jul 5, 1983
Inventors
Douglas C. Elliott
L. John Sealock, Jr.
Richard T. Hallen
Assignee (at issue)
Gas Research Institute
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.