ALEXANDRIA, Va., May 26 -- United States Patent no. 12,639,728, issued on May 26, was assigned to Amazon Technologies Inc. (Seattle).

"Machine learning techniques for content delivery service" was invented by Ioannis Ioannidis (Boulder, Colo.) and Anton Dmitriyevich Postnov (Boulder, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system is disclosed to host a first machine learning model and a second machine learning model, where the first machine learning model is trained using a first privacy-compliant dataset, and the second machine learning model is trained using a second privacy-compliant dataset. The system is to obtain a digital content request that includes a dataset including user data and d...