Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Alarming code lock

Alarming code lock

US Patent 11220842 · Granted Jan 11, 2022

Assignee

No assignee recorded.

Inventors

Unknown
Yanwen Liu (4 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Box wrap security device2024

Box wrap security device2024

Photocatalyst sterilization device and refrigerator including the same2020

Preparation method for extractive of jinxuan hemorrhoid washing powder botanical2017

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly