Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Catheter check valve

Catheter check valve

US Patent 4449693 · Granted May 22, 1984

Assignee

No assignee recorded.

Inventors

Gordon A. Gereg (8 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Variable stiffness tracheal tube1985

Lung exerciser with variable resistance1984

Overinflation indicator for tracheal tubes1982

Endotracheal tube holder and bite block1982

Cycle counter for lung exerciser1982

Lung exerciser1982

Suction canister with membrane shut-off valve1981

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly