Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Additive for oil-based ink for a ball point pen and oil based ink for a ball point pen containing the same

Additive for oil-based ink for a ball point pen and oil based ink for a ball point pen containing the same

US Patent 6441061 · Granted Aug 27, 2002

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Oil-based ink composition for writing utensils, writing utensil using same, and 2024
Writing tool provided with refill2023
Refill for writing implements and writing implements using the same2021
Writing tool refill and writing tool using same2020
Oil-based ink composition and uses thereof2008
Follower for non-aqueous ball point pen and non-aqueous ball point pen2007
Refill for oil-based ink ballpoint pen and oil-based ink ballpoint pen2005
Oil-base ink composition, writing utensils and dyes to be used therein2004
Ink for ball point pen1999