US Patent Issued to KURARAY on Aug. 25 for "Water-soluble film and packaging" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,966, issued on Aug. 25, was assigned to KURARAY Co. LTD. (Okayama, Japan).

"Water-soluble film and packaging" was invented by Minoru Okamoto (Okayama, Japan), Sayaka Shimizu (Okayama, Japan) and Osamu Kazeto (Okayama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem to be solved] To provide a water-soluble film capable of achieving both cold water solubility and resistance to oxidative deterioration.[Solution] A water-soluble film containing a polyvinyl alcohol resin, wherein the water-soluble film has a surface on at least one side in which an abundance ratio of carbonyl in all carbon bonds obtained by X-ray photoelectron spectroscopy ...