ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,754, issued on April 14, was assigned to Spiber Inc. (Yamagata, Japan).
"Protein fiber production method" was invented by Yunosuke Abe (Tsuruoka, Japan), Hirotada Ando (Kariya, Japan) and Koichi Kotaka (Tsuruoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for producing a protein fiber, the method including: bringing a spinning dope containing a protein and an organic solvent into contact with a coagulation liquid to coagulate the protein, wherein a content of the protein in the spinning dope is more than 10% by mass based on a total amount of the spinning dope, and the coagulation liquid contains water or an aqueous ...