Granted Patent
Utility
US 5,100,448 · App. 07/555,039
Variable density structured packing cryogenic distillation system
Inventors:
Michael James Lockett, Richard A. Victor, Robert Zawierucha, Kenneth McIlroy, Scott Cooper
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Jul 20, 1990
Inventors
Michael James Lockett
Richard A. Victor
Robert Zawierucha
Kenneth McIlroy
Scott Cooper
Assignee (at issue)
Union Carbide Industrial Gases Technology 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.