Takeharu Arakawa
17Patents
11h-index
22Co-inventors
68Inventor score
Filing activity: Feb 25, 1992 → Jul 20, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5394332A | On-board navigation system having audible tone indicating remaining distance or time in a trip | Physics | 85 | Expired |
| US5297051A | Map display device | Physics | 64 | Expired |
| US5424951A | On-board navigation apparatus having user registering function | Physics | 62 | Expired |
| US5617319A | Navigation apparatus with enhanced positional display function | Physics | 60 | Expired |
| US5396431A | Navigation system with position measuring device and aerial photographic storage capability | Physics | 57 | Expired |
| US5396430A | On-board navigation apparatus | Physics | 44 | Expired |
| US6122592A | Navigation apparatus with enhanced positional display function | Physics | 34 | Expired |
| US5383128A | Navigation device | Physics | 29 | Expired |
| US5463605A | Method of processing information of recording disc and apparatus for processing the same | Physics | 25 | Expired |
| US5337244A | On-board navigation apparatus | Physics | 23 | Expired |
| US6023652A | Vehicular navigation apparatus | Physics | 11 | Expired |
| US5938719A | Navigation apparatus with enhanced positional display function | Physics | 11 | Expired |
| US7702657B2 | Portable information processor | Physics | 2 | Active |
| US7242968B2 | Communication terminal unit, connection control method and program for the method | Physics | 1 | Expired |
| US7082366B2 | Communication terminal apparatus, connection control method for the apparatus and program for the method | Physics | 1 | Expired |
| US7133773B2 | Map distribution system and terminal device used in the same | Physics | 1 | Expired |
| US6957144B2 | Location confirmation system and information transmitting method for use in the system | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.