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IPC Main Group
G08B 21/00

Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
SIGNALLING
Subclass:
SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS

Filing statistics

IPC G08B 21/00 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

In connection with safety belts or body harnesses in vehicles, control systems, alarms or interlock systems for the correct application of the belt or harness Indicating or measuring liquid level or level of fluent solid material, e.g. indicating by means of an alarm Alarms or signals in apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details are not special to particular types of pressure gauges Radiation-measuring instruments with provision for actuation of an alarm

2 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class G08, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 6,781
  2. SGCC(STATE GRID CORPORATION OF CHINA) 5,954
  3. ROBERT BOSCH DE 3,656
  4. DENSO CORPORATION 3,452
  5. HONDA MOTOR COMPANY 2,945
  6. DENSO CORPORATION JP 2,562
  7. HONEYWELL INTERNATIONAL US 2,517
  8. TOYOTA MOTOR CORPORATION JP 2,435
  9. FORD GLOBAL TECHNOLOGIES US 2,239
  10. PANASONIC INTELLECTUAL PROPERTY 2,119