Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Tamper evident closure

Tamper evident closure

US Patent D397031 · Granted Aug 18, 1998

Assignee

Kerr

Inventors

Mark R. Fricke (6 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Composite two-piece tamper-evident closure with a seal-delay-release feature and2009

Child resistant closure and container with guarded flip-top2002

Child resistant closure and container2000

Apparatus for manufacturing a tampered-evident closure having a plurality of tab2000

Method for manufacturing a tamper-evident closure1998

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly