Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Non-refillable valve

Non-refillable valve

US Patent 6808159 · Granted Oct 26, 2004

Assignee

No assignee recorded.

Inventors

De Chen (8 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Pixel circuit with pulse width compensation and operation method thereof2024

Scan driving circuit and operation method thereof2024

Immunogenicity assay2019

One-step rapid assay for the detection of inhibitors of enzymes2017

Immunogenicity Assay2016

Multi-lateral flow assay strip carrier assembly2012

Non-refillable valve2003

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly