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:
Aug. 27, 2013
Filed:
Aug. 28, 2012
Jeffrey J. Spiegelman, San Diego, CA (US);
Richard D. Blethen, Vista, CA (US);
Jeffrey J. Spiegelman, San Diego, CA (US);
Richard D. Blethen, Vista, CA (US);
Rasirc, San Diego, CA (US);
Abstract
Methods for the purification of steam, systems for purifying steam, methods for measuring and/or controlling steam flow rates, and uses for purified steam are provide. Also provided are substantially gas-impermeable membranes, such as perfluorinated ionomers (e.g., perfluoroethylene-sulfonic-acid/tetrafluoroethylene membranes), having a high ratio of water vapor permeation relative to gas permeation through the membrane. Also provided are methods of operation of such membranes at relatively high operating temperatures for the purification of steam and for operation of such membranes at relatively low temperature and sub-atmospheric pressures for the purification of steam. In a preferred embodiment, the systemfor purifying steam comprises heaterfor creating a source of a steam feed, and a purification devicefor housing a substantially gas-impermeable membrane. In the operation of system, water, such as deionized water, is added to vesselto provide a source of the steam feed.