Now now, Elon does technically have one patent to his name personally.

Its the shape of the charging port for Teslas.

He patented this with the idea that if he ever did actually build out that massive EV charger network, he would basically be owed royalties if it successfully became the USB C of EV charging ports, so himself personally would be owned royalties if other car companies wanted to use that charging port shape.

But that was like a decade ago, and last I heard he fired the entire team at Tesla dedicated to the charging network.