Takashi Ishida
282Patents
30h-index
200Co-inventors
93Inventor score
Filing activity: Mar 14, 1974 → Apr 2, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6938162B1 | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system | Physics | 144 | Expired |
| US5850382A | Optical disk having a rewritable area and a read-only area | Physics | 107 | Expired |
| US5933410A | Optical disc and optical disc driving apparatus | Physics | 96 | Expired |
| US7184377B2 | Multi-layered information recording medium, recording apparatus, and recording method | Physics | 92 | Expired |
| US7123556B2 | Multi-layered information recording medium with spare defect management areas | Physics | 81 | Expired |
| US6343062B1 | Optical disk device and optical disk for recording and reproducing high-density signals | Physics | 75 | Expired |
| US5923640A | Optical disc with a rewritable area and a read-only area | Physics | 74 | Expired |
| US8049777B2 | Insertion support system for specifying a location of interest as an arbitrary region and also appropriately setting a navigation leading to the specified region | Human Necessities | 73 | Active |
| US6078559A | Optical disk having read-only and rewritable areas with overlapping formats | Physics | 63 | Expired |
| US4256075A | Fuel feed device for engine | Physics | 57 | Expired |
| US4524745A | Electronic control fuel injection system for spark ignition internal combustion engine | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US5872767A | Optical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracks | Physics | 44 | Expired |
| US7170841B2 | Information recording medium, recording apparatus, reproduction apparatus, recording method, and reproduction method | Physics | 44 | Expired |
| US6044051A | Optical information recording/reproducing device and method for recording, reproducing and erasing information on an optical information recording medium utilizing light beam radiation | Physics | 42 | Expired |
| US6577590B2 | Optical disk having wobble patterns | Physics | 41 | Expired |
| US4418673A | Electronic control fuel injection system for spark ignition internal combustion engine | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US6418111B1 | Optical disk compatible with read-only disk and having read-only and rewritable areas with overlapping formats | Physics | 40 | Expired |
| US6359846B1 | Recording medium recording apparatus and recording method | Physics | 39 | Expired |
| US5838658A | Optical disc | Physics | 37 | Expired |
| US5729525A | Two-layer optical disk | Physics | 36 | Expired |
| US6188656A | Optical data recording method, and data recording medium | Physics | 35 | Expired |
| US5898654A | Optical disk and optical disk apparatus having a predetermined pattern of marks on tracks such that a reproduced signal is caused to jitter | Physics | 35 | Expired |
| US4424785A | Fuel feed system for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US6608810B2 | Optical disk comprising a positional information section and a sync mark section each having a wobble pattern | Physics | 33 | Expired |
| US6101159A | Optical data recording method, and data recording medium | Physics | 31 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.