ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,662, issued on April 29, was assigned to KANEKA Corp. (Osaka, Japan).
"Method of producing polyhydroxyalkanoate" was invented by Hisashi Arikawa (Takasago, Japan), Shunsuke Sato (Takasago, Japan) and Yoshihiro Mouri (Takasago, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polyhydroxyalkanoate-producing microorganism is cultured to obtain microbial bodies accumulating polyhydroxyalkanoate particles and having an average cell size of 2 micro metre or more. The microbial bodies are subjected to a heat treatment at a temperature higher than a temperature in the culturing to increase an average particle size of the polyhydroxyalkanoate particles ...