US Patent Issued to KURARAY on Sept. 1 for "Waterproofing sheet for civil engineering use" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,138, issued on Sept. 1, was assigned to KURARAY Co. LTD. (Kurashiki, Japan).

"Waterproofing sheet for civil engineering use" was invented by Kazumasa Kusudo (Okayama, Japan), Hiroyuki Kawai (Saijo, Japan), Takashi Katayama (Tokyo), Shuhei Yorimitsu (Okayama, Japan), Noriko Kawashima (Tokyo), Daisuke Konishi (Kamisu, Japan), Naoyuki Yaguchi (Kokubunji, Japan) and Kenichi Kojima (Kokubunji, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a waterproof sheet for civil engineering, having sufficient strength and elongation even at a low temperature of about -10deg C. and having excellent adhesiveness to a structure such as a tunnel. Discl...