Inventor

TOMI HIDEAKI

JP3 patents

Patents

3 patents

US6099629AAug 8, 2000

Water based ink and water based pigment ink having metallic lustrous color for ballpoint pen

MITSUBISHI PENCIL CO62 citations93

US7345100B2Mar 18, 2008

Water-based ink composition for ball-point pen

MITSUBISHI PENCIL CO4 citations61

US7279512B2Oct 9, 2007

Water-based ink composition for ballpoint pen

MITSUBISHI PENCIL CO3 citations61