ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,567, issued on May 13.
"Composite nano-substance of cocoa-charcoal cladded conjugate structure and manufacturing method for yarn thereof" was invented by Si-Rong Chang (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composite nano-substance of a cocoa-charcoal cladded conjugate structure and a manufacturing method for a yarn thereof are provided. The manufacturing method includes subjecting cocoa shells to a carbonization process to form nanometer cocoa charcoal particulates; subjecting the nanometer cocoa charcoal particulates to reduction and oxidation to have a surface oxidized to form nanometer charcoal particulates containi...