US Patent Issued to TOYO SEIKAN GROUP HOLDINGS on Feb. 24 for "Method of removing impurities from plastic" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,817, issued on Feb. 24, was assigned to TOYO SEIKAN GROUP HOLDINGS LTD. (Tokyo).

"Method of removing impurities from plastic" was invented by Yuuki Tashiro (Yokohama, Japan), Seishi Yoshikawa (Yokohama, Japan), Jotaro Nagao (Tokyo) and Azusa Otsuki (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Impurities are removed from plastic by cleaning using, as a cleaning medium, water heated to a level where a dielectric constant is 60 or less."

The patent was filed on Nov. 15, 2021, under Application No. 18/035,960.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1...