Microsoft granted patent for rANS - used e.g. by JPEG XL (theregister.com)

Recently granted patent: https://patents.google.com/patent/US11234023B2/en

Describing rANS used e.g. in JPEG XL: https://en.wikipedia.org/wiki/Asymmetric_numeral_systems

And many others: https://encode.su/threads/2078-List-of-Asymmetric-Numeral-Sy...