P

Inventor

MATSUYAMA AKIHIKO

JP61 patents
⚠️ This page may combine multiple inventors who share the name “MATSUYAMA AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH CO LTD

13 patents
US7919544B2Apr 5, 2011

Ink-media set, ink composition, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matter

RICOH CO LTD80 citations98
US7977408B2Jul 12, 2011

Recording ink, ink set, ink cartridge, ink record, inkjet recording apparatus and inkjet recording method

RICOH CO LTD42 citations92
US9359522B2Jun 7, 2016

Ink composition, ink cartridge, inkjet recording device, and inkjet printed matter

RICOH CO LTD9 citations84
US11274221B2Mar 15, 2022

Ink, ink set, ink container, image forming method, image forming apparatus and recorded matter

RICOH CO LTD2 citations70
US11499062B2Nov 15, 2022

Ink, ink set, ink container, image forming method, and image forming apparatus

RICOH CO LTD0 citations52
US10844235B2Nov 24, 2020

Ink, method of manufacturing ink, and ink cartridge

RICOH CO LTD0 citations52
US9850335B2Dec 26, 2017

Copolymer, aqueous ink, and ink cartridge

RICOH CO LTD0 citations52
US9315684B2Apr 19, 2016

Ink composition, inkjet recording method, and printed matter

RICOH CO LTD0 citations52
US9267046B2Feb 23, 2016

Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matter

RICOH CO LTD0 citations52
US9150745B2Oct 6, 2015

Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matter

RICOH CO LTD0 citations52
US9102841B2Aug 11, 2015

Yellow ink composition for inkjet recording, and inkjet recording method and inkjet recorded material

RICOH CO LTD1 citations52
US9056993B2Jun 16, 2015

Ink composition, inkjet recording method, and printed matter

RICOH CO LTD1 citations52
US8383700B2Feb 26, 2013

Pigment dispersion, recording ink, ink cartridge, ink-jet recording method and ink-jet recording apparatus

RICOH CO LTD1 citations52

MATSUYAMA AKIHIKO

9 patents

RICOH KK

7 patents

KATOH KEITA

6 patents

GOTO HIROSHI

2 patents

NARUSE MITSURU

2 patents

NAMBA MICHIHIKO

2 patents

TAMAI TAKASHI

2 patents

HARADA SHIGEYUKI

2 patents

NAGAI KAZUKIYO

1 patent

ARUGA TAMOTSU

1 patent

FUKUOKA MASAYUKI

1 patent

KOIZUKA YUUSUKE

1 patent

HATADA SHIGEO

1 patent

Showing the top 50 of 61 patents by PatentIndex Score.