Inventor
ITOH SOHKO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “ITOH SOHKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ORIENT CHEMICAL IND
7 patentsUS5718746AFeb 17, 1998
Process of producing aqueous pigment ink
ORIENT CHEMICAL IND95 citations96
US6099632AAug 8, 2000
Aqueous pigment ink composition
ORIENT CHEMICAL IND62 citations95
US5846307ADec 8, 1998
Aqueous pigment ink composition
ORIENT CHEMICAL IND85 citations95
US5861447AJan 19, 1999
Aqueous pigment ink composition
ORIENT CHEMICAL IND96 citations93
US6468342B1Oct 22, 2002
Aqueous pigment dispersion and process for producing the same
ORIENT CHEMICAL IND34 citations91
US7232480B2Jun 19, 2007
Modified carbon black carbon black dispersion liquid and water base ink
ORIENT CHEMICAL IND8 citations73
US5905102AMay 18, 1999
Aqueous black ink composition for writing board
ORIENT CHEMICAL IND11 citations72