Granted Patent
Utility
US 4,461,649 · App. 06/490,594
Desorption technique
Inventors:
Richard W. Neuzil, Chin-Hsiung Chang
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: May 2, 1983
Inventors
Richard W. Neuzil
Chin-Hsiung Chang
Assignee (at issue)
UOP LLC
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.