ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,779,816, issued on Nov. 3.
"Modified straw waste composite board and preparation method thereof" was invented by Yubo Feng (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A modified straw waste composite board and a preparation method thereof. The composite board sequentially comprises a surface layer, a substrate layer, a weight reduction layer, and a protective layer from top to bottom. The invention significantly enhances the comprehensive performance of composite boards by introducing innovative materials such as phosphorus-doped straw-based porous carbon, zinc oxide quantum dots, modified emulsified asphalt, and nano-silicon dioxide....