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. 12, 2011
Filed:
Mar. 07, 2006
Applicants:
Bhupender S. Minhas, Bridgewater, NJ (US);
Ramon A. Strauss, Herndon, VA (US);
Tomas R. Melli, Haymarket, VA (US);
John H. Hollenbach, Vienna, VA (US);
Inventors:
Bhupender S. Minhas, Bridgewater, NJ (US);
Ramon A. Strauss, Herndon, VA (US);
Tomas R. Melli, Haymarket, VA (US);
John H. Hollenbach, Vienna, VA (US);
Assignee:
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/38 (2006.01); B01D 61/02 (2006.01); B01D 69/02 (2006.01); B01D 71/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cross-linked polyvinyl sulfate, copolymer of polyvinyl sulfate and polyvinyl alcohol, or Nafion® membrane is used for recovering sulfuric acid from a feed mixture comprising predominantly acid and water under reverse osmosis conditions wherein sulfuric acid is enriched in the retentate stream and water is removed in the permeate stream.