US Patent Issued to TOKYO OHKA KOGYO on Oct. 20 for "Aqueous cleaning liquid" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,906, issued on Oct. 20, was assigned to TOKYO OHKA KOGYO Co. LTD. (Kanagawa, Japan).

"Aqueous cleaning liquid" was invented by Jun Iioka (Kanagawa, Japan) and Takumi Namiki (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided an aqueous cleaning liquid containing hydrofluoric acid and a water-soluble aromatic compound, where the aqueous cleaning liquid has a pH of more than 5."

The patent was filed on Feb. 6, 2024, under Application No. 18/433,995.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsear...