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:
Sep. 15, 2020
Filed:
Jul. 23, 2018
Paul L. Frattini, Los Altos, CA (US);
Leon Yengoyan, San Jose, CA (US);
Paul L. Frattini, Los Altos, CA (US);
Leon Yengoyan, San Jose, CA (US);
San Jose State University Research Foundation, San Jose, CA (US);
Abstract
The invention provides chemical compounds for binding to a liquid phase cation having the formula R—SO—S—R—SH, wherein Rcomprises a support molecule, such as a polymer, and Rcomprises an alkyl. The polymer may be a crosslinked, polystyrene divinylbenzene copolymer having a plurality of pendant benzyl groups to which the —SO—S—R—SH ligand is attached. The alkyl group may be ethyl or propyl. The chemical compound may be used to complex cation lead or mercury, in which the cation is complexed with mercapto-sulfur of the thio-sulfonyl moiety and the terminal mercaptan to form a heterocyclic ring-like geometry incorporating the cation. A method for removing cations from a liquid stream using the chemical compounds of the present invention is also provided.