Keiji Ozeki
14Patents
2h-index
14Co-inventors
47Inventor score
Filing activity: Aug 4, 2005 → Apr 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7185621B2 | Glow plug with combustion pressure detecting function | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7272970B2 | Spark plug having combustion pressure detecting function | Physics | 3 | Expired |
| US9306375B2 | Spark plug | Electricity | 2 | Active |
| US10027093B2 | Spark plug | Electricity | 2 | Active |
| US9276383B2 | Spark plug, and production method therefor | Electricity | 1 | Active |
| US10256610B2 | Spark plug | Electricity | 0 | Active |
| US8939808B2 | Method and device for manufacturing spark plug | Electricity | 0 | Active |
| US10008834B2 | Method for manufacturing spark plug | Electricity | 0 | Active |
| US8791627B2 | Spark plug configured to reduce the occurance of flashover | Electricity | 0 | Active |
| US9620935B2 | Spark plug | Electricity | 0 | Active |
| US11476644B2 | Spark plug | Electricity | 0 | Active |
| US9496687B2 | Method for manufacturing spark plug | Electricity | 0 | Active |
| US9225150B2 | Spark plug | Electricity | 0 | Active |
| US9660423B2 | Spark plug having an electrode structure that effectively suppresses flashover | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.