Kunihiko Fujiwara
68Patents
18h-index
63Co-inventors
87Inventor score
Filing activity: Aug 13, 1979 → Apr 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6755574B2 | Optical connector | Physics | 122 | Expired |
| US7559702B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 66 | Active |
| US7850372B2 | Optical connector with optical fiber | Physics | 58 | Active |
| US8317411B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 56 | Active |
| US8083418B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 50 | Active |
| US7534052B2 | Optical transceiver and optical connector | Physics | 42 | Expired |
| US7473038B2 | Optical connector for coupling an optical fiber to a circuit board | Physics | 38 | Expired |
| US8165432B2 | Internal-reflection optical path changing member | Physics | 37 | Active |
| US6866424B2 | Optical connector with shutter | Physics | 32 | Expired |
| US7726885B2 | Optical connector having a fitting protrusion or fitting recess used for positioning | Physics | 31 | Active |
| US6189650A | Muffler structure | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US7287914B2 | Optical connector assembly, connector holder, and optical connector | Physics | 26 | Expired |
| US5971098A | Muffler for internal combustion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4728587A | Battery using halogen as active material | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7144163B2 | Optical connector with shutter, shutter unit, and inner piece | Physics | 19 | Expired |
| US5801343A | Muffler for internal combustion engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6425692B1 | Connecting structure for optical connector | Physics | 18 | Expired |
| US4277572A | Galvanic cell separator | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6905251B2 | Optical connector cleaning tool | Physics | 17 | Expired |
| US7918610B2 | Optical transceiver and optical connector | Physics | 13 | Active |
| US7243390B2 | Cleaning unit for optical connector and cleaning tool for optical connector | Physics | 12 | Expired |
| US7212719B2 | Optical connector cleaning tool, cleaning tape, optical connector cleaning method, optical component cleaning tool | Physics | 11 | Expired |
| USD681292S1 | Optical connector cleaner | General | 11 | Active |
| US9063304B2 | Ferrule and ferrule with optical fiber | Physics | 10 | Active |
| US6819855B2 | Clip removing tool and clip removing method | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.