Inventor
TOMIZAWA KEIJI
JP58 patents
⚠️ This page may combine multiple inventors who share the name “TOMIZAWA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
39 patentsUS6830317B2Dec 14, 2004
Ink jet recording head
CANON KK77 citations98
US6984026B2Jan 10, 2006
Ink jet record head
CANON KK26 citations93
US6971736B2Dec 6, 2005
Ink jet record head
CANON KK29 citations93
US9156263B2Oct 13, 2015
Liquid ejection head and method of producing the same
CANON KK8 citations84
US7963635B2Jun 21, 2011
Inkjet print head
CANON KK11 citations84
US7832843B2Nov 16, 2010
Liquid jet head
CANON KK10 citations84
US7784904B2Aug 31, 2010
Liquid jet head
CANON KK8 citations84
US7591537B2Sep 22, 2009
Ink jet recording head
CANON KK8 citations84
US7556330B2Jul 7, 2009
Recording apparatus and recording method
CANON KK13 citations84
US7628472B2Dec 8, 2009
Ink-jet recording head
CANON KK7 citations74
US6935723B2Aug 30, 2005
Ink jet recording head
CANON KK7 citations74
US9731503B2Aug 15, 2017
Liquid discharge head and liquid discharge apparatus using the same
CANON KK2 citations73
US8985721B2Mar 24, 2015
Printing apparatus and aging method
CANON KK4 citations73
US7735962B2Jun 15, 2010
Ink jet print head
CANON KK7 citations73
US10308018B2Jun 4, 2019
Printing apparatus and method of controlling printhead
CANON KK3 citations72
US7980663B2Jul 19, 2011
Liquid ejection head
CANON KK4 citations63
US7938511B2May 10, 2011
Liquid ejection head, inkjet printing apparatus and liquid ejecting method
CANON KK5 citations63
US7654648B2Feb 2, 2010
Liquid recording head
CANON KK2 citations63
US7090334B2Aug 15, 2006
Ink jet record head
CANON KK4 citations63
US8342631B2Jan 1, 2013
Inkjet print apparatus and inkjet print method
CANON KK3 citations62
US7963633B2Jun 21, 2011
Ink jet recording head and ink jet recording apparatus
CANON KK2 citations62
US7771026B2Aug 10, 2010
Ink jet recording head and liquid jetting method
CANON KK3 citations62
US7695088B2Apr 13, 2010
Ink jet printing apparatus and ink jet printing method
CANON KK6 citations62
US12576643B2Mar 17, 2026
Liquid ejection apparatus, method for controlling liquid ejection apparatus, and storage medium
CANON KK0 citations58
US12576636B2Mar 17, 2026
Liquid discharge head
CANON KK0 citations52
US12023924B2Jul 2, 2024
Liquid ejection apparatus and control method
CANON KK0 citations52
US11712891B2Aug 1, 2023
Liquid ejection head and liquid ejection apparatus
CANON KK0 citations52
US11597203B2Mar 7, 2023
Liquid ejection head including a plurality of recording element substrates formed adjacent to each other to form an array such that a gap in temperature distribution is prevented
CANON KK0 citations52
US11077658B2Aug 3, 2021
Liquid ejection head and method of manufacturing the same
CANON KK0 citations52
US10322578B2Jun 18, 2019
Liquid ejection head and liquid ejection apparatus
CANON KK0 citations52
US9969163B2May 15, 2018
Liquid discharge head
CANON KK1 citations52
US8033651B2Oct 11, 2011
Liquid ejection head and printing apparatus
CANON KK1 citations52
US7984976B2Jul 26, 2011
Liquid recording head
CANON KK1 citations52
USRE40994ENov 24, 2009
Ink jet recording head
CANON KK1 citations52
US9889650B2Feb 13, 2018
Liquid ejecting head, ejecting element substrate and liquid ejecting apparatus
CANON KK1 citations51
US9044944B2Jun 2, 2015
Liquid discharge head and method of making the same
CANON KK0 citations51
US12145359B2Nov 19, 2024
Liquid ejection apparatus and control method
CANON KK0 citations47
US12053979B2Aug 6, 2024
Liquid ejection apparatus and control method
CANON KK0 citations46
US9283755B2Mar 15, 2016
Liquid ejection head
CANON KK0 citations42
TOMIZAWA KEIJI
4 patentsUS9266325B2Feb 23, 2016
Print head and inkjet printing apparatus
TOMIZAWA KEIJI3 citations72
US8162446B2Apr 24, 2012
Print head
TOMIZAWA KEIJI6 citations71
US8083322B2Dec 27, 2011
Ink-jet recording head
TOMIZAWA KEIJI3 citations61
US8132895B2Mar 13, 2012
Printhead substrate, printhead, head cartridge, and printing apparatus
TOMIZAWA KEIJI0 citations51
OIKAWA MASAKI
2 patentsAKAMA YUICHIRO
1 patentKURODA TOMOTSUGU
1 patentKYOSHIMA MASAYUKI
1 patentMATSUMOTO MITSUHIRO
1 patentMURAOKA CHIAKI
1 patentShowing the top 50 of 58 patents by PatentIndex Score.