Kanji Higuchi
8Patents
7h-index
16Co-inventors
60Inventor score
Filing activity: Oct 12, 1978 → Jan 9, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4540910A | Spark plug for internal-combustion engine | Electricity | 48 | Expired |
| US4581558A | Spark plug for internal combustion engines having an alloy layer between the electrodes and tip ends | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4907256A | Exchange system having originating call restriction function | Electricity | 33 | Expired |
| US4488081A | Ignition plug | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4267483A | Insulator on spark plug electrode coated with zirconium and vanadium oxides | Electricity | 20 | Expired |
| USRE35012E | Spark plug for internal combustion engines having an alloy layer between the electrodes and tip ends | General | 7 | Expired |
| US4250426A | Spark plug having vanadium oxide islands on central insulator | Electricity | 7 | Expired |
| US12283796B2 | Spark plug | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.