Hisashi Sakai
19Patents
6h-index
35Co-inventors
66Inventor score
Filing activity: Apr 25, 1977 → Oct 24, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4164307A | Cap with supply stopper for use with containers | Performing Operations; Transporting | 13 | Expired |
| US5714665A | Method and apparatus for the decomposition and re-use-as-resource treatment of ozone layer-depleting substances by application of UV light | Performing Operations; Transporting | 11 | Expired |
| US6633322B2 | Light emitting element array, optical printer head using the same, and method for driving optical printer head | Electricity | 10 | Expired |
| US5102693A | Thermosensitive recording material | Performing Operations; Transporting | 8 | Expired |
| US4975408A | Thermosensitive recording material | Performing Operations; Transporting | 8 | Expired |
| US4507670A | Thermosensitive recording material | Performing Operations; Transporting | 6 | Expired |
| US5734091A | Method of manufacturing nitrogen oxide sensor, and nitrogen oxide sensor manufactured by the method and material therefor | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4571605A | Thermosensitive recording material | Performing Operations; Transporting | 6 | Expired |
| US4895828A | Thermosensitive recording material | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4916111A | Thermosensitive recording material | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5810984A | Nitrogen oxide sensor and method of manufacturing the sensor | Emerging Cross-Sectional Technologies | 4 | Expired |
| US10866203B2 | Stress sensor | Physics | 3 | Active |
| US5137864A | Thermosensitive recording material | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8191402B2 | Monitoring device of gas introducing device for analyzer | Emerging Cross-Sectional Technologies | 1 | Active |
| US10525501B2 | Roller transfer application method and application device for hot-melt adhesive | Chemistry; Metallurgy | 1 | Active |
| US11391687B2 | Gas sensor device and method for removing gas component | Physics | 1 | Active |
| US8227733B2 | Combined photoelectric conversion device | Emerging Cross-Sectional Technologies | 1 | Active |
| US9845090B2 | Hybrid vehicle | Emerging Cross-Sectional Technologies | 0 | Active |
| US8276470B2 | Device and method for introducing gas for analysis device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.