Masao Iwata
39Patents
12h-index
56Co-inventors
84Inventor score
Filing activity: Mar 21, 1975 → Dec 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5525942A | LC-type dielectric filter and duplexer | Electricity | 52 | Expired |
| US5811908A | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5525954A | Stripline resonator | Electricity | 30 | Expired |
| US4720622A | Wall-mounted type cooking apparatus | Electricity | 28 | Expired |
| US5715527A | Mobile communication device having an output power sensor succeeding a transmission filter | Electricity | 27 | Expired |
| US5652462A | Multilevel semiconductor integrated circuit device | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5490041A | Semiconductor integrated circuit module and a semiconductor integrated circuit device stacking the same | Electricity | 21 | Expired |
| US4093477A | Anisotropic permanent magnet alloy and a process for the production thereof | Chemistry; Metallurgy | 18 | Expired |
| US6802284B2 | Fuel injection device and air-fuel mixture generating device provided with fuel injection device | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5528458A | Integrated circuit device and its manufacturing method | Electricity | 15 | Expired |
| US6303989A | Integrated circuit device on metal board with CPU power converter | Electricity | 15 | Expired |
| US5742097A | Multilevel semiconductor integrated circuit device | Emerging Cross-Sectional Technologies | 14 | Expired |
| US3982972A | Semihard magnetic alloy and a process for the production thereof | Electricity | 12 | Expired |
| US8469001B2 | Work apparatus with internal combustion engine | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US4385617A | Over-rotation preventing device for internal combustion engines | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4989885A | Magnetic fluid retainer, and shaft sealer employing same | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4722206A | Lock system for hinged window-mounted back door | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3989556A | Semihard magnetic alloy and a process for the production thereof | Chemistry; Metallurgy | 7 | Expired |
| US4515140A | Contactless ignition device for internal combustion engines | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5800728A | Permanent magnetic material made of iron-rare earth metal alloy | Electricity | 6 | Expired |
| US4194932A | Fe/Cr/Co Permanent magnetic alloys and method of production thereof | Chemistry; Metallurgy | 5 | Expired |
| US9726095B2 | Engine driven working machine | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US5793649A | Apparatus for measuring the operation of vehicular engines | Physics | 5 | Expired |
| US6467147B2 | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6023828A | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.