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:
Dec. 30, 2014
Filed:
Sep. 30, 2011
Ravindra Revanur, Freemont, CA (US);
Iljuhn Roh, San Ramon, CA (US);
Jennifer E. Klare, Berkeley, CA (US);
Aleksandr Noy, San Carlos, CA (US);
Olgica Bakajin, San Leandro, CA (US);
Ravindra Revanur, Freemont, CA (US);
Iljuhn Roh, San Ramon, CA (US);
Jennifer E. Klare, Berkeley, CA (US);
Aleksandr Noy, San Carlos, CA (US);
Olgica Bakajin, San Leandro, CA (US);
Porifera, Inc., Hayward, CA (US);
Abstract
Forward osmosis membranes having a hydrophilic support layer and a polyamide rejection layer in a thin film composite membrane are considered. Preferred support layer materials include aramid polymers and PVDF. A woven or non-woven mesh can be incorporated into the support layer to improve handling properties of the membrane. Flat sheet and hollow fiber configurations are possible. Antifouling techniques are provided. The polyamide layer can be formed on the hydrophilic support layer by interfacial polymerization. Applications include forward osmosis and pressure retarded osmosis applications, such as industrial product and/or waste concentration, hydration bags, energy/pressure generation, and controlled delivery of chemicals (e.g., for pharmaceutical applications).