ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,235,769, issued on Feb. 25, was assigned to Apple Inc. (Cupertino, Calif.).

"Criticality-informed caching policies with multiple criticality levels" was invented by Tyler J. Huberty (Sunnyvale, Calif.), Vivek Venkatraman (Santa Clara, Calif.), Sandeep Gupta (Santa Clara, Calif.), Eric J. Furbish (Austin, Texas), Srinivasa Rangan Sridharan (Santa Clara, Calif.) and Stephen G. Meier (Los Altos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cache may store critical cache lines and non-critical cache lines, and may attempt to retain critical cache lines in the cache by, for example, favoring the critical cache lines in replacement data updates. Mu...