ZENRIN CO., LTD.
21Patents
18Active
21Granted
47Portfolio score
Filing activity: Oct 1, 2001 → Sep 24, 2019 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7343268B2 | Three-dimensional electronic map data creation method | Physics | 87 | Expired |
| US6622085B1 | Device and method for creating and using data on road map expressed by polygons | Physics | 79 | Expired |
| US9881218B2 | Location calculation system and non-transitory computer-readable medium | Physics | 21 | Active |
| US8731808B2 | Road network analysis system | Physics | 15 | Active |
| US9142147B2 | Map database generating systems, methods, and programs | Physics | 4 | Active |
| US8892522B2 | Map information management system and map information distribution system | Physics | 4 | Active |
| US7508400B2 | Digital map data processing system | Physics | 2 | Active |
| US9508257B2 | Road detection logic | Physics | 1 | Active |
| US9892636B2 | Method of collecting probe information, computer-readable recording media and travel time calculation apparatus | General | 0 | Revoked |
| US9903729B2 | Route search apparatus, route search method, computer program and data structure | Physics | 0 | Active |
| US9650050B2 | Driving support system, driving support method and computer-readable storage medium storing program | Performing Operations; Transporting | 0 | Active |
| US11161506B2 | Travel support device and non-transitory computer-readable medium | Performing Operations; Transporting | 0 | Active |
| US9928736B2 | Method of collecting probe information, computer-readable recording media and travel time calculation apparatus | Electricity | 0 | Active |
| US10495473B2 | Route search apparatus, route search method, computer readable storage medium storing a program and data structure | Physics | 0 | Active |
| US9430940B2 | Regulation information analysis system | Physics | 0 | Active |
| US10160461B2 | Drive assist system and non-transitory computer-readable medium | Performing Operations; Transporting | 0 | Active |
| US10126751B2 | Lane change support device | Physics | 0 | Active |
| US10558869B2 | Location specifying apparatus and non-transitory computer-readable medium | Physics | 0 | Active |
| US9650055B2 | Drive assist system and non-transitory computer-readable medium | Performing Operations; Transporting | 0 | Active |
| US11214250B2 | Travel support device and non-transitory computer-readable medium | Physics | 0 | Active |
| US10578446B2 | Route search apparatus, route search method and computer-readable storage medium storing program | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.