Audible signalling systems, e.g. audible personal calling systems

Filing statistics

IPC G08B 3/00 belongs to the parent subclass G08B, which recorded 306,319 patent applications worldwide between 2013 and 2023. Annual filings grew from 14,077 in 2013 to 35,298 in 2023 (+151%), peaking at 41,214 applications in 2020. The most active applicants in class G08 are TOYOTA MOTOR CORPORATION (6,781 applications), SGCC(STATE GRID CORPORATION OF CHINA) (5,954 applications) and ROBERT BOSCH (3,656 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Whistling kettles In model railways, arrangements for imitating locomotive features, e.g. whistling, signalling, puffing Road surface markings specially adapted for audible or vibrational signalling Acoustical signalling devices on ladders characterised by being mounted on undercarriages or vehicles Indicating the time by acoustic means Producing acoustic time signals by electrical means Telephonic communication systems combined with bell systems