Masayuki Izutsu
34Patents
8h-index
22Co-inventors
75Inventor score
Filing activity: Jan 6, 1986 → Nov 7, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6970655B2 | Method and circuit for generating single-sideband optical signal | Electricity | 29 | Expired |
| US4674827A | Slab-type optical device | Physics | 26 | Expired |
| US6304689A | General multi-function optical filter | Physics | 19 | Expired |
| US4850666A | Slab-type optical device | Physics | 19 | Expired |
| US7957652B2 | Optical FSK/SSB modulator having intensity balance function | Electricity | 14 | Active |
| US7245787B2 | Bias adjustment method for optical SSB modulator or optical FSK modulator | Physics | 11 | Expired |
| US7239763B2 | Optical SSB modulator | Physics | 11 | Expired |
| US7957653B2 | Phase control optical FSK modulator | Physics | 10 | Active |
| US8023775B2 | Super flat optical frequency comb signal generator | Physics | 7 | Active |
| US7853153B2 | Fourth harmonic generating system using optical double side-band suppressed carrier modulator | Electricity | 7 | Active |
| US7936996B2 | Automatic adjusting system of frequency shift keying modulator | Physics | 5 | Active |
| US7864330B2 | Method and device for calibrating a light intensity measurement device | Physics | 5 | Active |
| US7711215B2 | Optical amplitude modulation system capable of cancelling high order component | Physics | 5 | Active |
| US7689067B2 | Nested modulator | Physics | 4 | Active |
| US6791733B2 | Resonance type optical modulator using symmetric or asymmetric electrode | Physics | 4 | Expired |
| US6987904B2 | Variable-optical-delay apparatus | Physics | 3 | Expired |
| US8270780B2 | Optical switch system using optical interference | Physics | 3 | Active |
| US7425696B2 | Photoelectric oscillator | Physics | 3 | Expired |
| US7212331B2 | Reciprocating optical modulator | Electricity | 2 | Expired |
| US7526209B2 | Optical frequency shift keying modulator | Electricity | 2 | Expired |
| US7421209B2 | Optical wavelength multiplexing FSK modulation method | Electricity | 2 | Active |
| US7106497B2 | Low-noise optical frequency converter | Physics | 2 | Expired |
| US8170422B2 | Frequency shift keying demodulator | Physics | 2 | Active |
| US6788832B2 | Optical modulator and optical signal and electric wave signal converter using same | Physics | 1 | Expired |
| US7962039B2 | Multiple wavelength light source, and generation method for multiple wavelength light | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.