Akio Ichikawa
20Patents
5h-index
16Co-inventors
66Inventor score
Filing activity: Jul 16, 1979 → May 1, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5191387A | Polarization control system | Physics | 23 | Expired |
| US4253930A | Process for electrodepositing cationic compositions | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6643603B2 | Chromatic dispersion distribution measurement apparatus and method for the same | Physics | 8 | Expired |
| US6108465A | Optical pulse generator | Electricity | 7 | Expired |
| US5159400A | Apparatus for testing optical fiber by using detector having virtually broadened dynamic range | Physics | 7 | Expired |
| US5383210A | Optical phase locked loop circuit | Electricity | 5 | Expired |
| US6580500B2 | Chromatic dispersion distribution measurement apparatus and method for the same | Physics | 5 | Expired |
| US8307448B2 | Storage device, storage method, and image display device | Electricity | 4 | Active |
| US6101021A | Optical pulse generator | Electricity | 4 | Expired |
| US6594005B2 | Chromatic dispersion distribution measurement apparatus, method and storage medium for the same | Physics | 3 | Expired |
| US6580499B2 | Chromatic dispersion distribution measurement apparatus and method for the same | Physics | 3 | Expired |
| US6504613B1 | Optical interferometer with a casing and an optical part that is movable with respect to the casing | Physics | 2 | Expired |
| US6693714B1 | Position sensor for movable body and optical interferometer | Physics | 1 | Expired |
| US6594019B1 | Data processor and data processing method for wavemeter | Physics | 1 | Expired |
| US8170399B2 | Recording device and method | Electricity | 1 | Active |
| US9064095B2 | Content use control device, recording device, reproduction device, recording medium, and content use control method | Physics | 0 | Active |
| US6570658B1 | Optical part driving device incorporated into a detachable block and optical interferometer including same | Physics | 0 | Expired |
| US8108314B2 | Content use control device, recording device, reproduction device, recording medium, and content use control method | Physics | 0 | Active |
| US6690977B1 | Data processor and data processing method for wavemeter | Physics | 0 | Expired |
| US6593727B1 | Data processor and data processing method for wavemeter | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.