Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Power inverter

Power inverter

US Patent 4638418 · Granted Jan 20, 1987

Assignee

Tocco

Inventors

Jonathan W. Alexander (3 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Method of monitoring induction heating cycle1990

Method of monitoring induction heating cycle1989

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly