Toyoji Gushima
61Patents
13h-index
42Co-inventors
84Inventor score
Filing activity: Aug 30, 1994 → May 14, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5850382A | Optical disk having a rewritable area and a read-only area | Physics | 107 | Expired |
| US5737481A | Information recording method, information recording apparatus and information recording medium | Electricity | 48 | Expired |
| US6577590B2 | Optical disk having wobble patterns | Physics | 41 | Expired |
| US6721255B1 | Device and method for recording data to optical disk using recording pulse with corrected edge position | Physics | 36 | Expired |
| US6608810B2 | Optical disk comprising a positional information section and a sync mark section each having a wobble pattern | Physics | 33 | Expired |
| US6469980B1 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit data | Physics | 30 | Expired |
| US6757239B2 | Optical disk having wobble patterns and block identification marks | Physics | 30 | Expired |
| US5506825A | Optical disk and optical recording and reproducing apparatus | Physics | 29 | Expired |
| US6674700B2 | Optical disk having sub-blocks and sub-block indentification marks | Physics | 25 | Expired |
| US5809007A | Optical disk and optical disk reproduction apparatus | Physics | 25 | Expired |
| US7158464B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 24 | Expired |
| US6208603A | Optical disk, optical disk device, and method of reproducing information on optical disk | Physics | 20 | Expired |
| US7099244B2 | Wobble demodulator and wobble demodulation method | Physics | 18 | Expired |
| US6172960A | Optical disk and recording/reproducing apparatus using multiple address block groups shifted oppositely with multiple address blocks | Physics | 12 | Expired |
| US6181655A | Optical disc drive, timing signal generator, and information recording and reproduction method | Physics | 11 | Expired |
| US6975570B1 | Information recording/reproducing device using optical disk and method therefor and information recording system and information recording method | Physics | 9 | Expired |
| US7518971B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 7 | Active |
| US6269069A | Optical disk, optical disk device, and method of reproducing information on optical disk | Physics | 7 | Expired |
| US8218408B2 | Information recording method and information reproducing method | Physics | 5 | Active |
| US7145843B2 | Optical disk having wobble patterns representing control information | Physics | 4 | Expired |
| US7529167B2 | Optical disk having wobble patterns representing control information | Physics | 3 | Active |
| US7518970B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 3 | Active |
| US7403462B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 3 | Active |
| US7414946B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 3 | Active |
| US7385903B2 | Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.