ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,551, issued on April 14, was assigned to Osaka Organic Chemical Industry Ltd. (Osaka, Japan).
"Solid detergent composition" was invented by Yuko Yoda (Tokyo) and Tomomi Yano (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A solid detergent composition comprising a cationic polymer (A) and an anionic surfactant (B), wherein the cationic polymer (A) and the anionic surfactant (B) satisfy the following requirement I and requirement II: Requirement I: a transmittance of a mixed liquid 1 obtained by mixing the cationic polymer (A), the anionic surfactant (B), and water at a weight ratio of 0.5:12:87.5 to light having a wavelength of 655 nm (optica...