US Patent Issued to Hangzhou Buda Water Treatment Equipment on April 14 for "Swimming pool filter cartridge" (Chinese Inventor)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,853, issued on April 14, was assigned to Hangzhou Buda Water Treatment Equipment Co. Ltd (Hangzhou, China).

"Swimming pool filter cartridge" was invented by Budan Liu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A swimming pool filter cartridge includes a filter element, a body, and a fixing element. The filter element includes radially extending pleats. The pleats include a plurality of inner pleats defining a central chamber and a plurality of outer pleats defining an outer contour. The body extends through the central chamber and is connected to the plurality of inner pleats. The fixing element extends circumferentially along ...