Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Writing implement

Writing implement

US Patent 10331236 · Granted Jun 25, 2019

Assignee

Unknown

Inventors

Shin Feng (12 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Writing implement2025

Writing implement2023

Cable managing device for case2018

Cable managing device for case2018

Cable managing devise for case2018

Cable managing devise for case2018

Cable managing device for case2018

Pen2018

Control method of storage apparatus2016

Attachable cup for toothbrush2016

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly