Granted Patent
Utility
US 5,726,117 · App. 08/483,358
Sorbent compositions containing zinc subjected to a steam treatment
Inventors:
Gyanesh P. Khare, Donald H. Kubicek
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Jun 7, 1995
Inventors
Gyanesh P. Khare
Donald H. Kubicek
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.