The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2009
Filed:
Mar. 10, 2006
David Ross Graham, Harleysville, PA (US);
Justin David Bukowski, Lenhartsville, PA (US);
Jung Soo Choe, Gwynedd Valley, PA (US);
Donn Michael Herron, Fogelsville, PA (US);
Sang Kook Lee, Breinigsville, PA (US);
David Ross Graham, Harleysville, PA (US);
Justin David Bukowski, Lenhartsville, PA (US);
Jung Soo Choe, Gwynedd Valley, PA (US);
Donn Michael Herron, Fogelsville, PA (US);
Sang Kook Lee, Breinigsville, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method and apparatus for producing high purity argon by combined cryogenic distillation and adsorption technologies is disclosed. Crude argon from a distillation column or a so-called argon column is passed to a system of adsorption vessels for further purification. Depressurization gas from adsorption is introduced back, in a controlled manner, to the distillation column and/or a compressor or other means for increasing pressure. Particulate filtration and getter purification may optionally be used.