BERU Aktiengesellschaft
70Patents
17Active
70Granted
41Portfolio score
Filing activity: Feb 12, 1998 → Sep 22, 2009 · 17 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6181241A | Method of allocating transmitters of a tire pressure monitoring system to a particular vehicle | Performing Operations; Transporting | 66 | Expired |
| US6446502B1 | Method for assigning identifiers, present in signals emitted by transmitters in a tire pressure monitoring system, to the wheels where the transmitters are located | Performing Operations; Transporting | 46 | Expired |
| US6633229B1 | Method for assigning identifying elements in signals emitted by transmitters in a tire pressure indicating system to the wheels on which the transmitters are mounted | Performing Operations; Transporting | 37 | Expired |
| US6972671B2 | Device mounted on vehicles with pneumatic-tired wheels, for use in a tire pressure monitoring system | Performing Operations; Transporting | 34 | Expired |
| US6064144A | Spark plug for an internal combustion engine and process for its manufacture | Electricity | 31 | Expired |
| US6445286B1 | Method for operating a device for the monitoring and wireless signaling of a pressure change in pneumatic tires of a vehicle | Performing Operations; Transporting | 29 | Expired |
| US7017403B2 | Vehicle wheel comprising a tire and an assembly consisting of a valve a device for measuring the tire pressure and a spring for holding said device in the tire | Performing Operations; Transporting | 25 | Expired |
| US6807041B2 | Electronic triggering for heating elements | Electricity | 22 | Expired |
| US7042348B2 | Method for monitoring the tire pressure on vehicles | Performing Operations; Transporting | 19 | Expired |
| US6635851B2 | Process and circuit for heating up a glow plug | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6810203B2 | Electrical motor vehicle air heater with grounded housing | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6712032B2 | Method for heating up an electrical heating element, in particular a glow plug for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7234430B2 | Method for heating a glow plug for a diesel engine | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7160584B2 | Method for manufacturing ceramic glow plugs | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US7431004B2 | Method and device for operation of the glow plugs of a diesel engine | Mechanical Engineering; Lighting; Heating | 10 | Active |
| US7337657B2 | Pressure glow plug for a diesel engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7228730B2 | Pressure-measuring glow plug | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7002106B2 | Method and device for controlling the heating of glow plugs in a diesel engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6906288B2 | Method and device for controlling the heating of glow plugs in a diesel engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6335516B1 | Ceramic heating rod and glow plug containing the latter and a process for their manufacture | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7032438B2 | Pressure gauge glow plug | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US6715472B2 | Cold starter for an automobile engine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6736098B2 | Method and device for controlling the heating of the glow plugs in a diesel engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6705009B2 | Process for producing middle electrode | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6621021B2 | Differential pressure switch and sensor | Electricity | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.