Number of wireless charging patents filed per year worldwide 2010-2020

Inductive charging, also known as wireless charging increased in popularity in recent years and there were nearly 5.9 million wireless charging patents filed in 2019, as reported by IPlytics in November 2020.

感应式充电，亦称无线充电，近年来备受青睐。据 IPlytics 在 2020 年 11 月报道，2019 年共有近 590 万项无线充电专利被申请。