Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Spark plug for an internal combustion engine having a helically-grooved electrode

Spark plug for an internal combustion engine having a helically-grooved electrode

US Patent 6304023 · Granted Oct 16, 2001

Estimated economic value: $25,287,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Scissors gear assembly2015
Compliant gear assembly having variable spring force2014
Variable valve actuator having self-centering pivotal piston2010
Low current extended duration spark ignition system2005
Hanging message machine2004
Method and means for generating and maintaining spark in a varying pressure envi1998
Clothes hanger1998
High power ignition assist for an engine1998
Outward opening valve system for an engine1997
Fuel storage and delivey apparatus of a multi-fuel engine and process1996
Control for spark ignited internal combustion engine1988
Electric arc apparatus1982