ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,575, issued on May 20, was assigned to Capsugel Belgium NV (Bornem, Belgium).
"Film-forming composition containing surfactant or surfactant and salt as whitening agent" was invented by Kaori Sato (Kawasaki, Japan), Takahisa Takubo (Ayase, Japan) and Hitomi Doi (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem] Providing a whitened capsule and a whitened film without using any white pigment such as titanium dioxide.[Solution] Provided is a film, a capsule, and a film forming composition, characterized by comprising: a film-forming polymer; and a whitening agent including either a surfactant or both a surfactant and a salt, and ...