P

Inventor

WATANABE YOSHIFUMI

JP42 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE YOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RISO KAGAKU CORP

16 patents
US8038784B2Oct 18, 2011

Non-aqueous pigment ink and non-aqueous pigment ink set

RISO KAGAKU CORP14 citations84
US6699312B2Mar 2, 2004

Emulsion ink for stencil printing

RISO KAGAKU CORP15 citations84
US12194767B2Jan 14, 2025

Method for producing transfer sheet, and aqueous adhesive liquid

RISO KAGAKU CORP0 citations62
US11021624B2Jun 1, 2021

Oil-based magnetic ink

RISO KAGAKU CORP0 citations62
US7582153B2Sep 1, 2009

Aqueous ink for inkjet

RISO KAGAKU CORP4 citations59
US10920096B2Feb 16, 2021

Oil-based inkjet ink and method for producing oil-based inkjet ink

RISO KAGAKU CORP0 citations58
US10907062B2Feb 2, 2021

Oil-based inkjet ink and method for producing oil-based inkjet ink

RISO KAGAKU CORP0 citations58
US10144839B2Dec 4, 2018

Colored resin particle dispersion

RISO KAGAKU CORP1 citations51
US10059813B2Aug 28, 2018

Colored resin particle dispersion, method for producing same, and inkjet ink

RISO KAGAKU CORP0 citations51
US10040958B2Aug 7, 2018

Colored resin particle dispersion and inkjet ink

RISO KAGAKU CORP0 citations50
US9963603B2May 8, 2018

Colored resin particle dispersion and inkjet ink

RISO KAGAKU CORP1 citations50
US9803064B2Oct 31, 2017

Colored resin particle dispersion and inkjet ink

RISO KAGAKU CORP0 citations50
US9758693B2Sep 12, 2017

Colored resin particle dispersion and inkjet ink

RISO KAGAKU CORP0 citations50
US9643417B2May 9, 2017

Method for forming silicone-based cured film on ink discharge surface of nozzle plate for inkjet printer, and nozzle plate

RISO KAGAKU CORP0 citations50
US10106639B2Oct 23, 2018

Oil-based inkjet ink

RISO KAGAKU CORP1 citations48
US9212289B2Dec 15, 2015

Non-aqueous pigment ink

RISO KAGAKU CORP0 citations44

DENSO CORP

8 patents

WATANABE YOSHIFUMI

5 patents

DAIICHI SEIYAKU CO

3 patents

MAKITA CORP

3 patents

NIPPON DENSO CO

2 patents

AOKI SATOSHI

2 patents

HOSOYA TETSUO

1 patent

TOYOTA BOSHOKU KK

1 patent

SHIMIZU MANAMI

1 patent