Changfu Chen
21Patents
5h-index
17Co-inventors
66Inventor score
Filing activity: Jun 16, 2000 → Mar 16, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6513653B1 | Head frame for a golf bag | Human Necessities | 33 | Expired |
| US6598744B2 | Golf bag with an easy-to-assemble supporting device | Human Necessities | 28 | Expired |
| US11411323B2 | Compact wideband dual-polarized radiating elements for base station antenna applications | Electricity | 26 | Active |
| US6712206B2 | Head frame for golf club-bagging device | Human Necessities | 26 | Expired |
| US7216762B2 | Head frame for club-bagging device | Human Necessities | 15 | Expired |
| US11552396B2 | Phase shifter, remote electrical tilt system and base station antenna | Electricity | 2 | Active |
| US11374331B1 | Base station antenna including Fabrey-Perot cavities | Electricity | 1 | Active |
| US11380983B2 | Radome for base station antenna and base station antenna | Electricity | 1 | Active |
| US6938763B2 | Apparatus for carrying golf clubs | Human Necessities | 1 | Expired |
| US10950947B2 | Antenna feed elements with constant inverted phase | Electricity | 0 | Active |
| US11811144B2 | Antenna device | Electricity | 0 | Active |
| US11968782B2 | Coupler and base station antenna | Electricity | 0 | Active |
| US12191559B2 | Base station antennas including radiating elements having tilted dipoles | Electricity | 0 | Active |
| US12316002B2 | Multi-band antenna | Electricity | 0 | Active |
| US11557829B2 | Base station antenna | Electricity | 0 | Active |
| US12199327B2 | Power divider and base station antenna | Electricity | 0 | Active |
| US11831083B2 | Compact wideband dual-polarized radiating elements for base station antenna applications | Electricity | 0 | Active |
| US11985761B2 | Calibration circuit board and antenna apparatus including the same | Electricity | 0 | Active |
| US11637373B2 | Multi-band antennas having enhanced directors therein that inhibit radiation interference across multiple frequency bands | Electricity | 0 | Active |
| US11575197B2 | Multi-band antenna having passive radiation-filtering elements therein | Electricity | 0 | Active |
| US12322876B2 | Multi-band antennas having enhanced directors therein that inhibit radiation interference across multiple frequency bands | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.