Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Centrifugal fan

Centrifugal fan

US Patent 4913621 · Granted Apr 3, 1990

Assignee

No assignee recorded.

Inventors

Karl Reither (6 patents)

View full patent text on Google Patents →

More Patents by These Inventors

System and method for purifying ship diesel exhaust gases2015

Venturi cleaning system with two adjustable venturi grooves1998

Radial fan with an axial housing1993

Laboratory gas scrubber1993

Separation of particles from gaseous fluid flows1980

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly