Inventor
SUMIOKA KOICHI
JP6 patents
⚠️ This page may combine multiple inventors who share the name “SUMIOKA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PAPER MILLS LTD
4 patentsUS6607269B2Aug 19, 2003
Ink-jet recording material
MITSUBISHI PAPER MILLS LTD11 citations73
US4904578AFeb 27, 1990
Light absorbing dye for photography
MITSUBISHI PAPER MILLS LTD13 citations72
US6821585B2Nov 23, 2004
Ink-jet recording material and ink for ink-jet recording
MITSUBISHI PAPER MILLS LTD3 citations60
US8383831B2Feb 26, 2013
Dye for dye-sensitized solar cell, semiconductor electrode, and dye-sensitized solar cell
MITSUBISHI PAPER MILLS LTD0 citations33