Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Interference filter

Interference filter

US Patent 4832448 · Granted May 23, 1989

Assignee

Pilkington Pe Limited

Inventors

David Pierce Jones (4 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Check-in system2011

Method of impregnation of iron with a wear resistant material1991

High emissivity article having multiple layers of a material of high internal st1989

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly