Fujikura Ltd.
1,814Patents
1,335Active
1,814Granted
60Portfolio score
Filing activity: Feb 28, 1983 → Jan 4, 2024 · 292 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7113002B2 | Transmission cable structure for GHz frequency band signals and connector used for transmission of GHz frequency band signals | Electricity | 228 | Expired |
| US7418178B2 | Multi-core fiber | Physics | 220 | Active |
| US4525432A | Magnetic material wire | Emerging Cross-Sectional Technologies | 220 | Expired |
| US8363313B2 | Ytterbium-doped optical fiber, fiber laser, and fiber amplifier | Electricity | 219 | Active |
| US8941912B2 | Ytterbium-doped optical fiber, fiber laser and fiber amplifier | Electricity | 219 | Active |
| US6179482A | Optical connector and housing for optical connector | Physics | 181 | Expired |
| US5547501A | Method for formation of invisible marking and method for reading of invisible marking | Physics | 155 | Expired |
| US6973243B2 | Cable | Electricity | 133 | Expired |
| US5250127A | Method of manufacture for shielded flat electrical cable | Electricity | 122 | Expired |
| US4626618A | DC electric power cable | Emerging Cross-Sectional Technologies | 103 | Expired |
| US4896941A | Image-transmitting fiber | Physics | 88 | Expired |
| US7022609B2 | Manufacturing method of a semiconductor substrate provided with a through hole electrode | Emerging Cross-Sectional Technologies | 79 | Expired |
| US5694295A | Heat pipe and process for manufacturing the same | Mechanical Engineering; Lighting; Heating | 76 | Expired |
| US8678670B2 | Optical fiber connector, optical fiber connector assembling method, fusion-spliced portion reinforcing method, pin clamp, cap-attached optical fiber connector, optical fiber connector cap, optical fiber connector assembling tool, and optical fiber connector assembling set | Emerging Cross-Sectional Technologies | 69 | Active |
| US6129721A | Medical laser treatment device and laser probe for the same | Physics | 67 | 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 |
| US5174924A | PTC conductive polymer composition containing carbon black having large particle size and high DBP absorption | Electricity | 64 | Expired |
| US5650378A | Method of making polycrystalline thin film and superconducting oxide body | Emerging Cross-Sectional Technologies | 62 | Expired |
| US7253446B2 | Light emitting device and illumination apparatus | Electricity | 60 | Expired |
| US7180149B2 | Semiconductor package with through-hole | Electricity | 59 | Expired |
| US7301113B2 | Diaphragm for use in switch, method for manufacturing thereof, membrane switch, and input device | Electricity | 59 | Expired |
| US7850372B2 | Optical connector with optical fiber | Physics | 58 | Active |
| US10656347B2 | Connector attached optical fiber unit and optical connector boot with protection tube | Physics | 56 | 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 |
| US7164835B2 | Optical fiber | Physics | 54 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.