Inventor

HIRANO NORIHIRO

JP4 patents

Patents

4 patents

US6730154B2May 4, 2004

Polychromic ink composition depending on viewing angle

SAKURA COLOR PROD CORP22 citations91

US6666913B2Dec 23, 2003

Aqueous ink composition

SAKURA COLOR PROD CORP33 citations91

US5854320ADec 29, 1998

Water base erasable ink compositions

SAKURA COLOR PROD CORP33 citations91

US7371785B2May 13, 2008

Erasable ink composition

SAKURA COLOR PROD CORP7 citations69