ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,613, issued on Oct. 28, was assigned to TORAY INDUSTRIES Inc. (Tokyo).
"Biodegradable resin and film prepared thereby" was invented by Zongyan Gui (Shanghai), Ruxu Wang (Shanghai), Ke Wang (Shanghai), Takashi Arai (Shanghai) and Isao Manabe (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a biodegradable resin having an intrinsic viscosity of 1.0 dL/g or more, and having a loss rate of intrinsic viscosity of 10% or more after treatment at 70deg C. and 85% RH for 6 hr. The present invention also provides a biodegradable resin containing 70 wt % or more of polylactic acid and having a relative biodegradation rate...