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:
Jul. 18, 2017
Filed:
Feb. 22, 2016
Air Products and Chemicals, Inc., Allentown, PA (US);
Shubhra Jyoti Bhadra, Macungie, PA (US);
Roger Dean Whitley, Allentown, PA (US);
Garret Chi-Ho Lau, Emmaus, PA (US);
David Ross Graham, Harleysville, PA (US);
Donn Michael Herron, Fogelsville, PA (US);
Qiao Zhao, Macungie, PA (US);
Erin Marie Sorensen, Allentown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
Methods and systems for purifying argon from a crude argon stream are disclosed, employing pressure swing adsorption at cold temperatures from −186° C. to −20° C.; more preferably from −150° C. to −50° C.; and most preferably from −130° C. to −80° C. with oxygen-selective zeolite adsorbent. In some embodiments, the oxygen-selective zeolite adsorbent is a 4A zeolite, a chabazite, or a combination thereof.