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.:

US 7235180 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 26, 2007

Filed:

Sep. 13, 2005
Applicants:

Roger E. Johnson, Reno, NV (US);

Gerald Colombo, Myrtle Creek, OR (US);

Inventors:

Roger E. Johnson, Reno, NV (US);

Gerald Colombo, Myrtle Creek, OR (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 21/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

An improved system of resins comprising a combination of a sulfate-specific strongly basic anion exchange resin and a heterogenous hybrid thermally regenerable salt sorbent (TRSS) resin is provided. The anion exchange resin contains triethylamine and/or tributylamine groups. The TRSS resin comprises a macroporous host copolymer and a crosslinked guest copolymer having, respectively, weak acid groups and weak base groups. The system is used to treat feed water containing dissolved ions, including sulfate ions, and is efficiently regenerated.


Find Patent Forward Citations

Johnson, Roger. (2007). Sulfate-selective anion exchange resins for use in combination with trss resins in feed water treatment (U.S. Patent No. 7235180). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7235180

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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