Qingfeng Tang
48Patents
20h-index
24Co-inventors
81Inventor score
Filing activity: Sep 1, 1995 → Jul 26, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6597897B2 | Low power radio frequency transmitter with controllable gain | Physics | 273 | Expired |
| US7414380B2 | Apparatus for inductively recharging batteries of a portable convenience device | Electricity | 136 | Expired |
| US7042342B2 | Remote keyless entry transmitter fob with RF analyzer | Performing Operations; Transporting | 103 | Expired |
| US7388466B2 | Integrated passive entry and remote keyless entry system | Physics | 70 | Expired |
| US6724322B2 | Remote system for providing vehicle information to a user | Emerging Cross-Sectional Technologies | 69 | Expired |
| US6906612B2 | System and method for vehicle passive entry having inside/outside detection | Physics | 61 | Expired |
| US6940461B2 | Remote access device having multiple inductive coil antenna | Electricity | 59 | Expired |
| US7046119B2 | Vehicle independent passive entry system | Physics | 51 | Expired |
| US6434470B1 | Tire pressure vehicle speed limiting | Performing Operations; Transporting | 47 | Expired |
| US6420967B1 | System and method for shared vehicle tire pressure monitoring, remote keyless entry, and vehicle immobilization | Performing Operations; Transporting | 39 | Expired |
| US6671609B2 | Tire pressure vehicle speed limiting | Performing Operations; Transporting | 36 | Expired |
| US6788193B2 | System and method for tire pressure monitoring providing automatic tire location recognition | Electricity | 35 | Expired |
| US6693522B2 | System and method for tire pressure monitoring including automatic tire location recognition | Performing Operations; Transporting | 32 | Expired |
| US6563474B2 | Remote access device having multiple inductive coil antenna | Electricity | 31 | Expired |
| US7208912B2 | Inductive battery recharging system with peak voltage detection | Electricity | 28 | Expired |
| US6838985B2 | System and method for remote tire pressure monitoring with low frequency initiation | Electricity | 27 | Expired |
| US6650236B2 | System and method for shared vehicle tire pressure monitoring, remote keyless entry, and vehicle immobilization | Performing Operations; Transporting | 25 | Expired |
| US6983726B1 | Engine exhaust startup monitoring system | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6696983B2 | Remote system for providing vehicle information to a user | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6668636B2 | System and method for tire pressure monitoring including tire location recognition | Electricity | 22 | Expired |
| US6366051B1 | System for automatically charging the battery of a remote transmitter for use in a vehicle security system | Electricity | 20 | Expired |
| US6819229B2 | Countermeasure system and method for vehicle passive entry system | Physics | 14 | Expired |
| US6291968A | System for automatically charging the battery of a remote transmitter for use in a vehicle security system | Electricity | 14 | Expired |
| US6725712B1 | System and method for tire pressure monitoring with automatic tire location recognition | Electricity | 13 | Expired |
| US6647773B2 | System and method for integrated tire pressure monitoring and passive entry | Electricity | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.