Yoshinari Takemura
64Patents
20h-index
60Co-inventors
91Inventor score
Filing activity: May 3, 1985 → Mar 2, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6081785A | Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system | Physics | 125 | Expired |
| US5850382A | Optical disk having a rewritable area and a read-only area | Physics | 107 | Expired |
| US5490126A | Apparatus for recording and reproducing data on a disk | Physics | 107 | Expired |
| US5933410A | Optical disc and optical disc driving apparatus | Physics | 96 | Expired |
| US5636194A | Method of recording and reproducing data on a disk | Physics | 83 | Expired |
| US6266299A | Magneto-optical disk having write-once identification marks and method for recording thereof | Physics | 78 | Expired |
| US5923640A | Optical disc with a rewritable area and a read-only area | Physics | 74 | Expired |
| US6078559A | Optical disk having read-only and rewritable areas with overlapping formats | Physics | 63 | Expired |
| US5719843A | Method of maximum likelihood decoding and digital information playback apparatus | Electricity | 49 | Expired |
| US5737481A | Information recording method, information recording apparatus and information recording medium | Electricity | 48 | Expired |
| US5815209A | Encoding method, an encoding apparatus, a decoding method and a decoding apparatus for a moving picture | Electricity | 43 | Expired |
| US6962220B2 | Leg joint assist device for leg type movable robot | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6418111B1 | Optical disk compatible with read-only disk and having read-only and rewritable areas with overlapping formats | Physics | 40 | Expired |
| US5400315A | Optical disk system | Electricity | 39 | Expired |
| US5838658A | Optical disc | Physics | 37 | Expired |
| US6633853B2 | Recordable optical disk encrypted with disk identification and multiple keys | Physics | 31 | 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 |
| US5809007A | Optical disk and optical disk reproduction apparatus | Physics | 25 | Expired |
| US7409891B2 | Drive unit with reducer | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6343282B1 | Optical disk reading device using both a decipher key and disk identification information | Physics | 21 | Expired |
| US6678227B1 | Simultaneous recording and reproduction apparatus and simultaneous multi-channel reproduction apparatus | Physics | 20 | Expired |
| US6885629B2 | Recordable optical disk including an auxiliary information presence indicator | Physics | 17 | Expired |
| US5488593A | Disc reproducing method and apparatus with multiple heads | Physics | 17 | Expired |
| US7228923B2 | Device for absorbing floor-landing shock for legged mobile robot | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6167022A | Optical disc having oscillating land and grooves | Physics | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.