ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,322, issued on Nov. 4, was assigned to CARBON HOLDINGS INTELLECTUAL PROPERTIES LLC (Ranchester, Wyo.).

"Methods for manufacturing carbon fiber from coal" was invented by Christopher L. Yurchick (McDonald, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments discloses herein relate to methods of processing coal. A method to process coal includes subjecting raw coal to a liquefaction process effective to form a pitch resin, subjecting the pitch resin to a variable crystallinity spinning process effective to form raw fiber, and subjecting the raw fiber to a carbonization process effective to form a low thermal conductivity carbon fiber."

The ...