Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Safety relay

Safety relay

US Patent 6236553 · Granted May 22, 2001

Assignee

No assignee recorded.

Inventors

Gunnar Widell (4 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Proximity switch, a target, a system of such proximity switches and targets, and2003

Two hand control of working apparatuses2002

Security switch2000

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly