Kunitoshi Nishikawa
13Patents
11h-index
14Co-inventors
65Inventor score
Filing activity: Sep 22, 1988 → Jan 31, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4949268A | Land vehicle navigation system | Physics | 119 | Expired |
| US4907006A | Wide band antenna for mobile communications | Electricity | 77 | Expired |
| US6424298B1 | Microstrip array antenna | Electricity | 43 | Expired |
| US5166693A | Mobile antenna system | Electricity | 43 | Expired |
| US5245348A | Tracking antenna system | Electricity | 29 | Expired |
| US5146232A | Low profile antenna for land mobile communications | Electricity | 28 | Expired |
| US6034643A | Directional beam antenna device and directional beam controlling apparatus | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6580335B1 | Waveguide-transmission line transition having a slit and a matching element | Electricity | 16 | Expired |
| US6172650A | Antenna system | Electricity | 13 | Expired |
| US5675346A | Annular microstrip antenna element and radial line antenna system employing the same | Electricity | 12 | Expired |
| US6831611B2 | Antenna system | Electricity | 11 | Expired |
| US5900836A | Tracking antenna system | Electricity | 3 | Expired |
| US6972730B2 | Antenna system | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.