Sony Disc Technology Inc.
11Patents
0Active
11Granted
30Portfolio score
Filing activity: Jan 11, 1995 → Apr 22, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6228457A | Optical data storage medium | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5778911A | Liquid supplying apparatus | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5840395A | Optical information recording medium and method for producing same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5646415A | Apparatus for detecting a defect of an optical disc based on sensor outputs for adjacent positions | Physics | 7 | Expired |
| US6183235A | Electrically-operated injection molding machine | Performing Operations; Transporting | 7 | Expired |
| US7177264B2 | Optical recording medium, manufacturing method thereof, optical recording method, optical reproduction method, optical recording device, optical reproduction device and optical recording/reproduction device | Physics | 5 | Expired |
| US6562264B1 | Method of controlling a compression injection molding machine | Performing Operations; Transporting | 4 | Expired |
| US6159350A | Magnetron sputtering apparatus and mask | Physics | 3 | Expired |
| US6841103B2 | Injection molding apparatus and method | Performing Operations; Transporting | 2 | Expired |
| US6698570B2 | Object conveying device | Performing Operations; Transporting | 1 | Expired |
| US6541748B1 | Optical disk checkup/measuring apparatus | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.