IPC Main Group
G08B 19/00 Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
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
Additional Content
Alarms, indicators or feed-disabling devices responsive to material breakage or exhaustion in mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper Alarms, indicators or feed-disabling devices responsive to ink-ribbon breakage or exhaustion In rope- or cable-making machines, alarms or stop motions responsive to exhaustion or breakage of filamentary material fed from supply reels or bobbins
1 direct subcode
Child Classifications
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- G08B 19/02 Alarm responsive to formation or anticipated formation of ice
Top Applicants
Top 10 applicants by patent filingsfor class G08, 2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 6,781
- SGCC(STATE GRID CORPORATION OF CHINA) 5,954
- ROBERT BOSCH DE 3,656
- DENSO CORPORATION 3,452
- HONDA MOTOR COMPANY 2,945
- DENSO CORPORATION JP 2,562
- HONEYWELL INTERNATIONAL US 2,517
- TOYOTA MOTOR CORPORATION JP 2,435
- FORD GLOBAL TECHNOLOGIES US 2,239
- PANASONIC INTELLECTUAL PROPERTY 2,119