1
Stanley Kulish, Robert P Swank: Rapid cycle pressure swing adsorption oxygen concentration method and apparatus. Impact MST Incorporation, Wood Herron & Evans L, October 27, 1998: US05827358 (120 worldwide citation)

A rapid pressure swing adsorption oxygen concentrator is provided having a plurality of at least three sieve beds cycled in sequence such that each is pressurized during one segment of a cycle and depressurized during a plurality of segments of a cycle while the other sieve beds are being sequential ...


2
Bowie Gordon Keefer, David George Doman: Flow regulated pressure swing adsorption system. SoFinoy Societte Financiere d Innovation, May 16, 2000: US06063161 (103 worldwide citation)

Pressure swing adsorption (PSA) separation of a gas mixture is performed in an apparatus with a plurality of adsorbent beds. The invention provides rotary multiport distributor valves to control the timing sequence of the PSA cycle steps between the beds, with flow controls cooperating with the rota ...


3
Thomas Richard Gaffney, Timothy Christopher Golden, Steven Gerard Mayorga, Jeffrey Richard Brzozowski, Fred William Taylor: Carbon dioxide pressure swing adsorption process using modified alumina adsorbents. Air Products and Chemicals, Keith D Gourley, June 29, 1999: US05917136 (99 worldwide citation)

A pressure swing adsorption process for absorbing CO.sub.2 from a gaseous mixture containing CO.sub.2 comprising introducing the gaseous mixture at a first pressure into a reactor containing a modified alumina adsorbent maintained at a temperature ranging from 100.degree. C. and 500.degree. C. to ad ...


4
Bowie G Keefer: High frequency pressure swing adsorption. Questor, January 23, 2001: US06176897 (91 worldwide citation)

Pressure swing adsorption separation of a feed gas mixture, to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed in a plurality of preferably an even number of adsorbent beds, with each adsorbent bed communicating at its product end directly t ...


5
Norman R McCombs: Capacity control system for pressure swing adsorption apparatus and associated method. AirSep Corporation, Michael E McKee, December 12, 1995: US05474595 (90 worldwide citation)

A pressure swing adsorption apparatus including a compressor for pumping a flow of a gaseous mixture through an adsorption medium utilizes a capacity control system by which the operating capacity of the compressor can be preselected. The capacity control system is disposed upstream, i.e. on the suc ...


6
Norman R McCombs, Robert E Casey, Michael A Chimiak, Andrezj Klimaszewski: Portable oxygen concentrator. AirSep Corporation, Ronald S Kareken Esq, Jaeckle Fleischmann & Mugel, July 20, 2004: US06764534 (85 worldwide citation)

A compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable times and in selectable doses.


7
Bowie G Keefer, Christopher R McLean: High frequency rotary pressure swing adsorption apparatus. Questor, May 2, 2000: US06056804 (84 worldwide citation)

Pressure swing adsorption separation of a feed gas mixture, to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with a cooperating set of "N" adsorbers in a rotary assembly, with each adsorber communicating at its product end directly to a ro ...


8
William Bachop Dolan, Michael J Mitariten: Heavy hydrocarbon recovery from pressure swing adsorption unit tail gas. Engelhard Corporation, Russell G Lindenfeldar, August 26, 2003: US06610124 (83 worldwide citation)

A pressure swing adsorption process for the separation of impurities such as nitrogen and carbon dioxide and recovery of hydrocarbons from a natural gas stream utilizes two separate adsorption systems, the first containing an adsorbent selective for nitrogen, carbon dioxide or both and the second co ...


9
Glenn M Tom, James V McManus: Process system with integrated gas storage and delivery unit. Advanced Technology Materials, Steven J Hultquist, Janet R Elliott, January 13, 1998: US05707424 (72 worldwide citation)

A process system with an integrated gas storage and delivery unit comprising an adsorption-desorption apparatus, for storage and dispensing of a gas wherein the gas is dispensed by pressure differential desorption of the sorbate gas from the sorbent material. A motive fluid driver, e.g., a pump, blo ...


10
Timothy Christopher Golden, Catherine Marie Anne Golden, Daniel Patrick Zwilling: Self-supported structured adsorbent for gas separation. Air Products and Chemicals, Keith D Gourley, May 20, 2003: US06565627 (71 worldwide citation)

A rapid pressure swing adsorption (RPSA) process includes the use of an adsorbent fabric. The fabric can be self-supporting, have an average pore diameter greater than 5 Å and/or have a carbon dioxide mass transfer coefficient of at least 0.5 sec