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 patentsUS9399352B2Jul 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 patentsSEIKO EPSON CORP HQ
2 patentsNAKA TAKAHIRO
1 patentSEIKO ESPON CORP
1 patentShowing the top 50 of 59 patents by PatentIndex Score.