Norio Takeda
35Patents
10h-index
42Co-inventors
75Inventor score
Filing activity: Aug 25, 1977 → Apr 12, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7381979B2 | Rotating irradiation apparatus | Human Necessities | 158 | Active |
| US7961844B2 | Rotating irradiation therapy apparatus | Human Necessities | 151 | Active |
| US5278853A | Optical isolator | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5345329A | Polarization-independent optical isolator | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5091986A | Optical divider for multimode optical fiber systems | Physics | 22 | Expired |
| US5493222A | Reflection type magnetooptic sensor head with faraday rotator | Physics | 11 | Expired |
| US5838853A | Optical waveguide | Physics | 11 | Expired |
| US5512193A | Low saturated magnetic field bismuth-substituted rare earth iron garnet single crystal and its use | Chemistry; Metallurgy | 11 | Expired |
| US5535046A | Faraday rotator | Physics | 11 | Expired |
| US5920420A | Faraday rotator with antireflection film | Physics | 10 | Expired |
| US5898516A | Faraday rotator having a rectangular shaped hysteresis | Physics | 10 | Expired |
| US4932760A | Magneto-optic garnet | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5463316A | Magnetooptic sensor head | Physics | 9 | Expired |
| US9680341B2 | Rotating electric machine including rotor core with slots having protrusions | Electricity | 9 | Active |
| US6059878A | Method of manufacturing a bismuth-substituted rare-earth iron garnet single crystal film | Chemistry; Metallurgy | 8 | Expired |
| US6755662B2 | Method for presenting most suitable question and apparatus for presenting most suitable question | Physics | 7 | Expired |
| US5565131A | Bismuth-substituted rare earth iron garnet single crystal | Physics | 7 | Expired |
| US5866092A | Garnet single crystal for substrate of magneto-optic element and method of manufacturing thereof | Physics | 4 | Expired |
| US6769917B2 | Method for indicating defective part in educational material and apparatus for indicating defective part in educational material | Physics | 4 | Expired |
| US4347383A | Process for producing benzophenone-azines | Chemistry; Metallurgy | 4 | Expired |
| US9423329B2 | Testing apparatus | Physics | 4 | Active |
| US5925474A | Bismuth-substituted rare earth iron garnet single crystal film | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4130586A | Process for producing imine compounds | Chemistry; Metallurgy | 3 | Expired |
| US4083869A | Process for producing imine compounds | Chemistry; Metallurgy | 3 | Expired |
| US6411641B1 | Faraday rotator for use with high energy lasers | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.