Inventor

QUAN RALPH W

US4 patents

⚠️ This page may combine multiple inventors who share the name “QUAN RALPH W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ASSA ABLOY AB

2 patents

US7439862B2Oct 21, 2008

Antenna array for an RFID reader compatible with transponders operating at different carrier frequencies

ASSA ABLOY AB114 citations95

US7539465B2May 26, 2009

Tuning an RFID reader with electronic switches

ASSA ABLOY AB48 citations89

ASSA ABLOY IDENTIFICATION TECH

2 patents

US7124943B2Oct 24, 2006

RFID system having a field reprogrammable RFID reader

ASSA ABLOY IDENTIFICATION TECH71 citations90

US7180403B2Feb 20, 2007

RFID reader utilizing an analog to digital converter for data acquisition and power monitoring functions

ASSA ABLOY IDENTIFICATION TECH47 citations89