Hirofumi Nishikawa
91Patents
24h-index
60Co-inventors
91Inventor score
Filing activity: Oct 30, 1991 → Jan 9, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5307297A | Data processor with wireless auxiliary input apparatus | Electricity | 136 | Expired |
| US6002439A | Image signal coding system | Electricity | 100 | Expired |
| US6493385B1 | Image encoding method, image encoder, image decoding method, and image decoder | Electricity | 96 | Expired |
| US6097759A | Image signal coding system | Electricity | 88 | Expired |
| US5990960A | Image signal coding system | Electricity | 87 | Expired |
| US7031965B1 | Image retrieving and delivering system and image retrieving and delivering method | Emerging Cross-Sectional Technologies | 82 | Expired |
| US5274442A | Adaptive blocking image signal coding system | Electricity | 72 | Expired |
| US6307973A | Image signal coding system | Electricity | 69 | Expired |
| US6862320B1 | Image decoder, image encoder, image communication system, and encoded bit stream converter | Electricity | 63 | Expired |
| US6188794A | Image signal coding system | Electricity | 62 | Expired |
| US5963258A | Image signal coding system | Electricity | 62 | Expired |
| US5949489A | Image signal coding system | Electricity | 61 | Expired |
| US5970175A | Image signal coding system | Electricity | 61 | Expired |
| US5497455A | Portable computer which has a task selection menu allowing easy selection and execution of arbitrary application software without entering a command | Physics | 56 | Expired |
| US6385343B1 | Image decoding device and image encoding device | Electricity | 43 | Expired |
| US5406273A | Data processor | Electricity | 38 | Expired |
| US6775326B2 | Moving image estimating system | Electricity | 38 | Expired |
| US6665442B2 | Image retrieval system and image retrieval method | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6697433B1 | Image decoding apparatus | Electricity | 32 | Expired |
| US6442207B1 | Image coded data re-encoding apparatus without once decoding the original image coded data | Electricity | 27 | Expired |
| US6246438A | Image coded data re-encoding apparatus without once decoding the original image coded data | Electricity | 25 | Expired |
| US5305445A | System and method employing extended memory capacity detection | Physics | 24 | Expired |
| US7826709B2 | Metadata editing apparatus, metadata reproduction apparatus, metadata delivery apparatus, metadata search apparatus, metadata re-generation condition setting apparatus, metadata delivery method and hint information description method | Electricity | 24 | Active |
| US6404815B1 | Image encoder, image decoder, image encoding method, image decoding method and image encoding/decoding system | Electricity | 24 | Expired |
| US5696978A | Personal computer for performing power save operation of an external CRT by determining a DPMS-compliant CRT | Physics | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.