Tsuyoshi Katayama
17Patents
9h-index
19Co-inventors
69Inventor score
Filing activity: Nov 11, 1976 → Mar 7, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5754506A | Optical disk drive and optical disk having address pits for sectors in land and groove tracks | Physics | 54 | Expired |
| US5848050A | Optical disk having a continuous recording track formed of alternating land and groove revolutions | Physics | 53 | Expired |
| US7676306B2 | Vehicle behavior analysis system | Physics | 42 | Active |
| US6147961A | Optical disk and optical disk drive device | Physics | 41 | Expired |
| US5867474A | Optical disk having a continuous information track formed of alterating land/groove revolutions and optical disk drive | Physics | 37 | Expired |
| US5892740A | Optical disk drive and optical disk having address pits for sectors in land and groove tracks | Physics | 27 | Expired |
| US5859820A | Optical disk drive and optical disk having a continuous information track formed of alternating land and groove revolutions | Physics | 20 | Expired |
| US5517299A | Apparatus and method for examining key plates | Physics | 16 | Expired |
| US6069869A | Optical disk and optical disk drive device | Physics | 13 | Expired |
| US8452502B2 | Driving recorder | Physics | 8 | Active |
| US6275466A | Optical disk and optical disk drive device | Physics | 5 | Expired |
| US4095055A | Multi-stage switching network in a telecommunication switching system | Electricity | 3 | Expired |
| US6236637A | Optical disk and optical disk drive device | Physics | 3 | Expired |
| US8860558B2 | Remote control device and communication system | Emerging Cross-Sectional Technologies | 1 | Active |
| US8284645B2 | Cyclic memory and disc device | Physics | 0 | Active |
| US6396799B1 | Optical disk drive device using an optical disk having a continuous information track formed of alternating land/groove revolutions | Physics | 0 | Expired |
| US7869314B2 | Disc control device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.