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:
May. 12, 2020
Filed:
Jun. 22, 2017
Teledyne Scientific & Imaging, Llc, Thousand Oaks, CA (US);
Dennis R. Strauss, Ventura, CA (US);
Rahul Ganguli, Agoura Hills, CA (US);
Ten-Luen T. Liao, South Pasadena, CA (US);
Vivek Mehrotra, Simi Valley, CA (US);
Paulus Henricus Johannes Verbeek, Voorhout, NL;
Thomas Krebs, Doorwerth, NL;
Teledyne Scientific & Imaging, LLC, Thousand Oaks, CA (US);
Abstract
A filtration membrane coating comprising a hydrophilic polymer, a surfactant, and one or more charged compounds, each containing one or more sulfonate functionalities and one or more linkable functionalities selected from the group consisting of amine, monochlorotriazine, and dichlorotriazine. The hydrophilic polymer and surfactant form a thin primer layer which is also superhydrophilic. The primer layer improves flux, and enables improved adhesion of the one or more charged compounds, which form a charged dye layer on top of the primer layer when enhances rejection of charged divalent ions. The coating can be applied while the membrane is packaged in its final form, such as in a spiral wound or other configuration.