Yoshinao Iwamoto
22Patents
10h-index
24Co-inventors
75Inventor score
Filing activity: Dec 30, 1974 → Jul 6, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4641915A | Rotary joint for optical fibers | Physics | 63 | Expired |
| US4637686A | Optical fiber with light reflecting particles dispersed through buffer layers to dissipate leaky cladding modes | Physics | 37 | Expired |
| US4923291A | Optical amplification | Electricity | 36 | Expired |
| US4438401A | System for detecting a cable buried under the seabed | Physics | 26 | Expired |
| US4544233A | Underwater optical fiber connector | Physics | 24 | Expired |
| US4899043A | Fault monitoring system for optical fiber communication systems | Electricity | 23 | Expired |
| US4972513A | Multi-point optical amplification repeating system | Electricity | 18 | Expired |
| US4747094A | Signal coupling system for optical repeater system | Electricity | 16 | Expired |
| US4537530A | Marine cable burying method and device therefor | Electricity | 13 | Expired |
| US4911522A | Core alignment system for optical fibers | Physics | 13 | Expired |
| US3983475A | Frequency selective detecting system for detecting alternating magnetic fields | Physics | 8 | Expired |
| US4317079A | Buried cable locating system | Physics | 7 | Expired |
| US4764980A | System for measuring delay time variation in optical fiber digital communication system | Electricity | 7 | Expired |
| US4625172A | Apparatus for supplying AC current to an underwater cable | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4933990A | Optical privacy communication system in two-way optical transmission system | Electricity | 6 | Expired |
| US4384808A | Under-water cable burying device | Electricity | 4 | Expired |
| US4678371A | Burying device for submarine cables and method for guiding the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4492492A | Guiding method for cable burying device and a device therefor | Electricity | 4 | Expired |
| US10327799B2 | Scissors | Human Necessities | 3 | Active |
| US4540942A | Alternating current induction method using an annular magnetic coupling body for detecting the position of a buried submarine cable | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5048922A | Optical fiber cable | Physics | 1 | Expired |
| US9506143B2 | Protective film and method for producing same | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.