ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,996, issued on July 1, was assigned to Jiangnan University (Wuxi, China).
"Bio-based waterproof and oil-proof wrapping paper and preparation method thereof" was invented by Zhu Long (Wuxi, China) and Ruifeng Zhu (Wuxi, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses a bio-based waterproof and oil-proof wrapping paper and a preparation method thereof, and belongs to the field of waterproof and oil-proof papers. The method for preparing the waterproof and oil-proof wrapping paper in the present disclosure includes: (1) impregnating base paper in a calcium chloride solution, taking out the base paper, and drying the...