Granted Patent
Utility
US 4,816,043 · App. 06/739,628
Adsorption-desorption fluid fractionation with cycle phase switching controlled by purge and saturation front conditions
Inventor:
Stanley Harrison
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: May 31, 1985
Inventor
Stanley Harrison
Assignee (at issue)
Wilkerson Corporation
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.