Hiroyuki Torii
11Patents
3h-index
25Co-inventors
60Inventor score
Filing activity: Apr 6, 1989 → May 27, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5978546A | Digital/analog compatible video tape recorder | Electricity | 12 | Expired |
| US5075803A | Signal discriminating device for VTR having expanded dynamic range | Electricity | 8 | Expired |
| US8131721B2 | Information retrieval method, information retrieval apparatus, and computer product | Emerging Cross-Sectional Technologies | 6 | Active |
| US5432612A | Multi-mode video signal playback and display device | Electricity | 2 | Expired |
| US6272285A | Digital/analog compatible video tape recorder | Electricity | 2 | Expired |
| US6519006B1 | Image aspect ratio converting apparatus | Electricity | 2 | Expired |
| US6798979B2 | Digital/analog compatible video tape recorder | Electricity | 0 | Expired |
| US7263272B2 | Digital/analog compatible video tape recorder | Electricity | 0 | Expired |
| US11691693B2 | Front sprocket assembly for human-powered vehicle | Performing Operations; Transporting | 0 | Active |
| US10594485B2 | System, method, program, and recording medium storing program for authentication | Human Necessities | 0 | Active |
| US9081874B2 | Information retrieval method, information retrieval apparatus, and computer product | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.