Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › System for automated toll collection assisted by GPS technology

System for automated toll collection assisted by GPS technology

US Patent 5490079 · Granted Feb 6, 1996

Estimated economic value: $8,448,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Shape modulation transmit loop with digital frequency control and method for sam2001
Self aligning PLL demodulator1999
Automatic vehicle identification system capable of vehicle lane discrimination1997
Automatic vehicle identification system capable of vehicle lane discrimination1997
Multi-stage transponder wake-up, method and structure1997
Multi-stage transponder wake-up, method and structure1995
Modulation field detection, method and structure1995
Microcomputer based keyboard command entry concept for VHF communication and nav1987
Automatic interference canceling apparatus1985
Radio telephone with position transmission capability1984
Controlled antenna tuner1983