Granted Patent
Utility
US 5,069,690 · App. 07/660,474
Process for kinetic gas-solid chromatographic separations
Inventors:
Philip Bruce Henderson, Charles G. Coe, Donald Elson Fowler, Montford S. Benson
Patented Case
View Patent ↗
Granted: Dec 3, 1991
Filed: Feb 21, 1991
Inventors
Philip Bruce Henderson
Charles G. Coe
Donald Elson Fowler
Montford S. Benson
Assignee (at issue)
Air Products and Chemicals, Inc.
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.