Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Glow plug

Glow plug

US Patent RE31908 · Granted Jun 4, 1985

Assignee

Sun Chemical

Inventors

John T. Petrik (3 patents)
Brooke N. Westover (8 patents)

View full patent text on Google Patents →

More Patents by These Inventors

High temperature electric air heater with tranversely mounted PTC resistors1992

High-speed, high temperature resistance heater and method of making same1991

Variable steam control for electric iron1988

One-piece wrap-around clamping shell for cigar lighter1987

Method of making a composite clamping shell1987

Composite clamping shell for electric cigar lighters1986

Chime generator circuit for connection with existing automobile radio speaker1986

Diesel glow-plug ignitor1983

Diesel glow-plug ignitor1983

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly