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. 31, 2007
Filed:
Nov. 19, 2003
Rajiv K. Agarwal, North Wales, PA (US);
George L. Ryals, Newton, NJ (US);
Wei Cao, Orefield, PA (US);
John Frederick Cirucci, Schnecksville, PA (US);
Robert W. Apollo, Swedesboro, NJ (US);
Daniel Mcnesby, New Hope, PA (US);
Rajiv K. Agarwal, North Wales, PA (US);
George L. Ryals, Newton, NJ (US);
Wei Cao, Orefield, PA (US);
John Frederick Cirucci, Schnecksville, PA (US);
Robert W. Apollo, Swedesboro, NJ (US);
Daniel McNesby, New Hope, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
Method for the purification of a volatile metal hydride comprising obtaining a volatile metal hydride feed containing one or more acidic impurities, one of which is a sulfur-containing impurity; contacting the feed with an alkaline material and reacting at least a portion of the sulfur-containing impurity with the alkaline material to remove a portion of the sulfur-containing impurity from the feed and provide an intermediate purified material, wherein the contacting of the feed with an alkaline material is effected at a sub-ambient temperature; and contacting the intermediate purified product with an adsorbent material to remove at least a portion of the sulfur-containing impurity from the intermediate purified material and provide a purified volatile metal hydride product.