Inventor
KAMAGATA TADASHI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KAMAGATA TADASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PENCIL CO
9 patentsUS6492435B1Dec 10, 2002
Water based white color tone pigment ink for ball point pen
MITSUBISHI PENCIL CO20 citations90
US6776829B2Aug 17, 2004
Water-based ink composition for writing utensil
MITSUBISHI PENCIL CO15 citations83
US6491747B2Dec 10, 2002
Water based ink composition for writing instrument
MITSUBISHI PENCIL CO6 citations73
US6451099B1Sep 17, 2002
Water based ink composition for ball point pen
MITSUBISHI PENCIL CO13 citations71
US6312510B1Nov 6, 2001
Water-base white pigment ink for ballpoints
MITSUBISHI PENCIL CO13 citations71
US6599352B1Jul 29, 2003
Water-based ink composition for writing instrument
MITSUBISHI PENCIL CO4 citations62
US6471759B2Oct 29, 2002
Water based ink composition for writing instrument
MITSUBISHI PENCIL CO2 citations62
US6391927B1May 21, 2002
Method for manufacturing ink follower for water base ballpoint pens
MITSUBISHI PENCIL CO3 citations61
US6554890B2Apr 29, 2003
Water based ink composition for writing instrument
MITSUBISHI PENCIL CO1 citations51