ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,748,832, issued on Sept. 29, was assigned to WhatsApp LLC (Menlo Park, Calif.).
"Screen lock during video call" was invented by Neeraj Narang (Sunnyvale, Calif.) and Yu-Hsuan Wang (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for locking a touch-screen of a mobile device for a video conference application is provided. The method includes receiving, from a user of a client device, a request to lock a screen in the client device during a video conference call, locking the screen in the client device, in response to the request, and providing a video stream of the video conference to the user in the screen of the client device....