Roger Karam
61Patents
17h-index
24Co-inventors
84Inventor score
Filing activity: Sep 26, 1997 → Feb 9, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7471014B2 | Method and apparatus distributing power to a load in a powered device | Electricity | 227 | Active |
| US6804351B1 | Method and apparatus for detecting a compatible phantom powered device using common mode signaling | Electricity | 104 | Expired |
| US7593747B1 | Techniques for controlling delivery of power to a remotely powerable device based on temperature | Physics | 89 | Active |
| US7921307B2 | Methods and apparatus providing advanced classification for power over Ethernet | Physics | 80 | Active |
| US7940787B2 | Low-power ethernet device | Electricity | 76 | Active |
| US7973538B2 | Power over ethernet system having hazard detection circuitry to detect potentially hazardous cable conditions | Physics | 73 | Active |
| US6310781A | Connection pin layout for connecting integrated magnetics modules to a printed circuit board | Electricity | 71 | Expired |
| US8184525B2 | Method and apparatus for detecting and fixing faults in an inline-power capable ethernet system | Emerging Cross-Sectional Technologies | 69 | Active |
| US8020043B2 | Field failure data collection | Electricity | 63 | Active |
| US6952785B1 | Methods and apparatus for powering a data communications port | Physics | 38 | Expired |
| US7613939B2 | Method and apparatus for changing power class for a powered device | Electricity | 32 | Active |
| US5947773A | Connector with ESD protection | Electricity | 32 | Expired |
| US6614236B1 | Cable link integrity detector | Physics | 31 | Expired |
| US6912282B2 | Enabling Cisco legacy power to support IEEE 802.3 AF standard power | Electricity | 31 | Expired |
| US6958699B1 | Signal-disruption detection in powered networking systems | Physics | 30 | Expired |
| US7903809B2 | Power management for serial-powered device connections | Electricity | 21 | Active |
| US7404250B2 | Method for fabricating a printed circuit board having a coaxial via | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7724650B2 | Multi-station physical layer communication over TP cable | Electricity | 17 | Active |
| US7474704B2 | Method and apparatus for current sharing ethernet power across four conductor pairs | Electricity | 13 | Active |
| US7793137B2 | Redundant power and data in a wired data telecommunincations network | Electricity | 12 | Active |
| US8300666B2 | Inline power-based common mode communications in a wired data telecommunications network | Electricity | 12 | Active |
| US8171315B2 | Method and apparatus for changing power class for a powered device | Electricity | 12 | Active |
| US8035038B2 | Method for fabricating a printed circuit board having a coaxial via | Emerging Cross-Sectional Technologies | 11 | Active |
| US7457252B2 | Current imbalance compensation for magnetics in a wired data telecommunications network | Electricity | 11 | Active |
| US7849351B2 | Power and data redundancy in a single wiring closet | Electricity | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.