Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Pen with abrasive portion

Pen with abrasive portion

US Patent D537879 · Granted Mar 6, 2007

Assignee

No assignee recorded.

Inventors

Unknown

View full patent text on Google Patents →

More Patents by These Inventors

Triangular-shaped writing instrument with abrasive surface on upper portion2007

Square-shaped writing instrument with abrasive surface on upper portion2007

Utility resource aggregation and allocation2007

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly