P

Inventor

OKAZAWA NORIAKI

JP59 patents
⚠️ This page may combine multiple inventors who share the name “OKAZAWA NORIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SEIKO EPSON CORP

43 patents
US9399352B2Jul 26, 2016

Liquid container

SEIKO EPSON CORP58 citations98
US7300142B1Nov 27, 2007

Ink cartridge for ink-jet printing apparatus

SEIKO EPSON CORP44 citations96
US6386672B1May 14, 2002

Ink jet type recording head

SEIKO EPSON CORP53 citations96
US6382754B1May 7, 2002

Ink jet printing device

SEIKO EPSON CORP66 citations96
US6139132AOct 31, 2000

Ink jet recording head with nozzle communicating hole having smaller width than pressurizing chambers in direction of array of pressurizing chambers

SEIKO EPSON CORP42 citations96
US7229162B2Jun 12, 2007

Liquid jet head

SEIKO EPSON CORP10 citations93
US7070263B2Jul 4, 2006

Liquid jet head

SEIKO EPSON CORP21 citations93
US6332671B1Dec 25, 2001

Ink jet recording head and method of manufacturing the same

SEIKO EPSON CORP21 citations93
US5710584AJan 20, 1998

Ink jet recording head utilizing a vibration plate having diaphragm portions and thick wall portions

SEIKO EPSON CORP51 citations93
US5548314AAug 20, 1996

Ink jet recording head

SEIKO EPSON CORP23 citations93
US6755515B2Jun 29, 2004

Ink cartridge for ink-jet printing apparatus

SEIKO EPSON CORP23 citations92
US6217159B1Apr 17, 2001

Ink jet printing device

SEIKO EPSON CORP38 citations92
US9186902B2Nov 17, 2015

Liquid containing vessel

SEIKO EPSON CORP15 citations84
USD737135SAug 25, 2015

Ink cartridge box for printers

SEIKO EPSON CORP13 citations84
US6749296B2Jun 15, 2004

Ink jet recording apparatus

SEIKO EPSON CORP16 citations84
US6626524B2Sep 30, 2003

Ink jet recording head provided with a vibrator unit

SEIKO EPSON CORP14 citations84
US6296351B1Oct 2, 2001

Ink jet recording head with narrowed reservoir ends

SEIKO EPSON CORP15 citations84
US7984982B2Jul 26, 2011

Liquid jet head

SEIKO EPSON CORP4 citations74
US7028377B2Apr 18, 2006

Method of producing an ink jet recording head

SEIKO EPSON CORP6 citations74
US6729002B1May 4, 2004

Method of producing an ink jet recording head

SEIKO EPSON CORP6 citations74
US6460981B1Oct 8, 2002

Ink jet recording head having spacer with etched pressurizing chambers and ink supply ports

SEIKO EPSON CORP12 citations74
US6382778B1May 7, 2002

Ink jet recording head and method of manufacturing the same

SEIKO EPSON CORP13 citations74
US10703098B2Jul 7, 2020

Liquid ejecting apparatus and method

SEIKO EPSON CORP5 citations73
US6048053AApr 11, 2000

Ink jet recording head including a spacing member for defining a gap between a fixed board and a piezoelectric element

SEIKO EPSON CORP11 citations71
US6598962B2Jul 29, 2003

Ink jet recording head

SEIKO EPSON CORP7 citations66
US8876271B2Nov 4, 2014

Liquid jet head

SEIKO EPSON CORP2 citations63
US7387373B2Jun 17, 2008

Liquid ejecting head and liquid ejecting apparatus

SEIKO EPSON CORP2 citations63
US7102273B2Sep 5, 2006

Piezoelectric element formation member incorporated in piezoelectric element formation unit, piezoelectric actuator unit and liquid ejection head

SEIKO EPSON CORP2 citations63
US7009327B2Mar 7, 2006

Piezoelectric element formation member, method of manufacturing the same, piezoelectric actuator unit and liquid ejection head incorporating the same

SEIKO EPSON CORP6 citations63
US7871156B2Jan 18, 2011

Ink cartridge for ink-jet printing apparatus

SEIKO EPSON CORP3 citations62
US7871157B2Jan 18, 2011

Liquid-jet apparatus liquid introducing needle with air intake suppression

SEIKO EPSON CORP4 citations60
US6878609B2Apr 12, 2005

Silicon wafer break pattern, silicon substrate, and method of generating silicon wafer break pattern

SEIKO EPSON CORP4 citations59
US7490923B2Feb 17, 2009

Liquid ejecting head

SEIKO EPSON CORP4 citations55
US6736491B2May 18, 2004

Liquid jetting head and method of manufacturing the same

SEIKO EPSON CORP4 citations54
US12251942B2Mar 18, 2025

Liquid ejecting apparatus and liquid ejecting method

SEIKO EPSON CORP0 citations52
US10946656B2Mar 16, 2021

Liquid ejection head and liquid ejection apparatus

SEIKO EPSON CORP0 citations52
US10894400B2Jan 19, 2021

Liquid ejecting apparatus

SEIKO EPSON CORP0 citations52
US10889114B2Jan 12, 2021

Liquid ejecting apparatus and liquid ejecting head

SEIKO EPSON CORP0 citations52
US9855754B2Jan 2, 2018

Liquid discharging device

SEIKO EPSON CORP1 citations52
US8783840B2Jul 22, 2014

Liquid jet head

SEIKO EPSON CORP0 citations52
US12552174B2Feb 17, 2026

Liquid ejecting head, liquid ejecting apparatus, and filter member

SEIKO EPSON CORP0 citations50
US6699552B2Mar 2, 2004

Silicon wafer break pattern, silicon substrate

SEIKO EPSON CORP1 citations48
US10857795B2Dec 8, 2020

Liquid ejection head, liquid ejection apparatus, and method of manufacturing liquid ejection head

SEIKO EPSON CORP0 citations42

OKAZAWA NORIAKI

3 patents

SEIKO EPSON CORP HQ

2 patents

NAKA TAKAHIRO

1 patent

SEIKO ESPON CORP

1 patent

Showing the top 50 of 59 patents by PatentIndex Score.