Inventor · disambiguated record
Shuuji Ichikawa
Also filed as: ICHIKAWA SHUUJI
3 granted patents·19 citations·filing 2001–2002
67Inventor score
Files withMITSUBISHI PENCIL CO3
Top patents by PatentIndex Score
3 records- 0165US6830611B2Oil-base ink composition, writing utensils and dyes to be used thereinMITSUBISHI PENCIL CO·Filed 2001·Granted Dec 14, 2004·9 cites·56 claims
- 0255US7381754B2Oil-based ink composition and uses thereofMITSUBISHI PENCIL CO·Filed 2002·Granted Jun 3, 2008·4 cites·22 claims
- 0353US6530708B2Ink follower composition for oil-based ballpoint pensMITSUBISHI PENCIL CO·Filed 2002·Granted Mar 11, 2003·6 cites·7 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →