Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Brake equipment

Brake equipment

US Patent 4234063 · Granted Nov 18, 1980

Assignee

Coal Industry (Patents) Limited

Inventors

Donald Blake (3 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Drill tool strap assembly2004

Air purge system for gas turbine engine1984

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly