Editorial seeks to patent ‘Kimetsu no Yaiba’ clothing patterns, but only manages to protect 3 Posted byEntrepreneur en Español June 15, 2021 Leave a comment on Editorial seeks to patent ‘Kimetsu no Yaiba’ clothing patterns, but only manages to protect 3 Shueisha, owner of the animated series “Demon Slayer,” was approved only by three of the six clothing patterns they were seeking to register.