STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY

Description

H05F covers electric phenomena arising from static charge accumulation and natural electrical processes. This includes electrostatic generation, control, and application technologies; electrostatic discharge management; and phenomena such as atmospheric electricity, lightning, and bioelectricity. The classification encompasses both harmful effects (e.g., electrostatic damage prevention in manufacturing) and beneficial applications (e.g., electrostatic printing, precipitation, and separation processes). Adjacent classes H05A–H05E address other non-standard electrical techniques, while H05G covers electromagnetic disturbances and radio interference.

Filing statistics

CPC subclass H05F recorded 6,530 patent applications worldwide between 2013 and 2023. Annual filings grew from 298 in 2013 to 723 in 2023 (+143%), peaking at 940 applications in 2020. The most active applicants in class H05 are SAMSUNG ELECTRONICS COMPANY (9,981 applications), SAMSUNG DISPLAY (5,041 applications) and LG ELECTRONICS (4,742 applications).

Source: EPO PATSTAT, worldwide filings