Hideto Iwaoka
25Patents
15h-index
33Co-inventors
81Inventor score
Filing activity: Sep 14, 1976 → Feb 5, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6590710B2 | Fabry-Perot filter, wavelength-selective infrared detector and infrared gas analyzer using the filter and detector | Physics | 65 | Expired |
| US4856899A | Optical frequency analyzer using a local oscillator heterodyne detection of incident light | Electricity | 61 | Expired |
| US4912526A | Optical frequency synthesizer/sweeper | Electricity | 47 | Expired |
| US4629886A | High resolution digital diffraction grating scale encoder | Physics | 41 | Expired |
| US4833681A | Semiconductor laser wavelength stabilizer | Electricity | 33 | Expired |
| US4893353A | Optical frequency synthesizer/sweeper | Electricity | 33 | Expired |
| US4665368A | NMR imaging apparatus | Physics | 25 | Expired |
| US4772843A | Time measuring apparatus | Physics | 23 | Expired |
| US5077752A | Semiconductor laser | Electricity | 23 | Expired |
| US5061030A | Optical integrated modulator | Physics | 22 | Expired |
| US5289494A | Distributed feedback semiconductor laser | Electricity | 20 | Expired |
| US4700136A | NMR imaging apparatus | Physics | 19 | Expired |
| US4663592A | NMR image forming apparatus | Physics | 19 | Expired |
| US4694250A | Nuclear magnetic resonance imaging device | Physics | 19 | Expired |
| US4700138A | Automatic gain control apparatus for NMR imaging system | Electricity | 17 | Expired |
| US4684889A | NMR apparatus compensated for primary field changes | Physics | 15 | Expired |
| US4536712A | Method and apparatus for examination by nuclear magnetic resonance | Physics | 15 | Expired |
| US4651097A | Examination method and apparatus utilizing nuclear magnetic resonance | Physics | 15 | Expired |
| US4623864A | Magnetic field production coil for nuclear magnetic resonance imaging apparatus | Electricity | 11 | Expired |
| US4584548A | Magnetic field generating coil assembly for nuclear magnetic resonance imaging apparatus | Physics | 10 | Expired |
| US5583446A | Electro-optically controlled measurement probe system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5189309A | Avalanche photodiode with AliNAsP cap layer | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4768847A | Hologram scanner | Physics | 3 | Expired |
| US4063150A | Resonance thermometer | Physics | 2 | Expired |
| US4716370A | Coil arrangement for producing static magnetic field | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.