Yoichi Tsuchiya
56Patents
12h-index
53Co-inventors
87Inventor score
Filing activity: Apr 14, 1994 → Jun 30, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5917791A | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Physics | 44 | Expired |
| US5477527A | High density optical disc and optical disc player | Physics | 34 | Expired |
| US6552990B1 | Optical head for two different disk thicknesses with a light beam diameter control device | Physics | 33 | Expired |
| US5787061A | Optical disc recording reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Physics | 26 | Expired |
| US5856965A | Optical disc readout apparatus for different types of optical discs | Physics | 25 | Expired |
| US5777970A | Optical disk readout apparatus | Physics | 24 | Expired |
| US6201777A | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Physics | 23 | Expired |
| US5796683A | Magneto-optical recording device having a controllable polarizing filter | Physics | 23 | Expired |
| US5687154A | Optical pickup device which can be adapted to plurality of types of optical disks | Physics | 19 | Expired |
| US6080353A | Method of molding a heat-resistant container | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6181668A | Optical pickup device and wavelength selective diffraction grating | Physics | 15 | Expired |
| US5870371A | Optical pickup device which can be adapted to plurality of types of optical disks | Physics | 14 | Expired |
| US6156258A | Injection blow molding machine, injection blow molding method and injection molding machine | Performing Operations; Transporting | 12 | Expired |
| US6049518A | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Physics | 12 | Expired |
| US6321028A | Optical disk recording/reproduction apparatus for recording/reproducing information to/from optical disk of different standards | Electricity | 11 | Expired |
| US6167019A | Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Physics | 10 | Expired |
| US9238341B2 | Preform neck crystallization method | Performing Operations; Transporting | 9 | Active |
| US7376166B2 | Semiconductor laser apparatus and optical pickup apparatus | Electricity | 7 | Expired |
| US6574182B1 | Optical pickup compatible with a plurality of types of optical disks having different thicknesses | Physics | 7 | Expired |
| US5838657A | High density optical disc and optical disc player | Physics | 6 | Expired |
| US6607375B1 | System of injection blow molding and injection molding device | Performing Operations; Transporting | 6 | Expired |
| US6137764A | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Physics | 6 | Expired |
| US7486712B2 | Semiconductor laser apparatus, method of manufacturing semiconductor laser apparatus, and optical pickup apparatus | Electricity | 6 | Expired |
| US6025866A | Superresolution optical pickup apparatus | Physics | 6 | Expired |
| US5689495A | High density optical disc and optical disc player | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.