Inventor

KOIZUMI YOSHIHIRO

JP67 patents

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

SEIKO EPSON CORP

42 patents

US6955422B2Oct 18, 2005

Ink cartridge

SEIKO EPSON CORP120 citations99

US6863388B2Mar 8, 2005

Ink cartridge and ink jet recording head adaptable for the same

SEIKO EPSON CORP68 citations98

US8870349B2Oct 28, 2014

Adaptor

SEIKO EPSON CORP7 citations84

US11691427B2Jul 4, 2023

Cartridge, printing device, and printing system

SEIKO EPSON CORP4 citations75

US7934822B2May 3, 2011

Ink cartridge

SEIKO EPSON CORP4 citations74

US7614732B2Nov 10, 2009

Ink cartridge

SEIKO EPSON CORP6 citations74

US7614729B2Nov 10, 2009

Liquid jetting device

SEIKO EPSON CORP6 citations74

US7325915B2Feb 5, 2008

Ink cartridge having retaining structure

SEIKO EPSON CORP6 citations74

US7237882B2Jul 3, 2007

Ink cartridge having retaining structure and recording apparatus for receiving the ink cartridge

SEIKO EPSON CORP9 citations74

US6457818B1Oct 1, 2002

Ink jet type recording head

SEIKO EPSON CORP11 citations74

US11318749B2May 3, 2022

Ink cartridge, printer, and method for mounting ink cartridge

SEIKO EPSON CORP4 citations73

USD817392SMay 8, 2018

Ink cartridge

SEIKO EPSON CORP4 citations73

US9616671B2Apr 11, 2017

Cartridge

SEIKO EPSON CORP2 citations73

US9555637B2Jan 31, 2017

Cartridge and liquid supplying method

SEIKO EPSON CORP4 citations73

US10414164B2Sep 17, 2019

Cartridge, cartridge unit, and liquid ejection system

SEIKO EPSON CORP1 citations72

US9393793B2Jul 19, 2016

Liquid ejecting apparatus

SEIKO EPSON CORP3 citations72

US12447749B2Oct 21, 2025

Ink refill container

SEIKO EPSON CORP0 citations63

USD1061705SFeb 11, 2025

Ink cartridge

SEIKO EPSON CORP1 citations63

US7997699B2Aug 16, 2011

Liquid ejecting apparatus

SEIKO EPSON CORP2 citations63

US7934794B2May 3, 2011

Ink cartridge

SEIKO EPSON CORP2 citations63

US12502891B2Dec 23, 2025

Liquid storage container and liquid storage container set

SEIKO EPSON CORP0 citations62

US12434481B2Oct 7, 2025

Attachment and printing system

SEIKO EPSON CORP0 citations62

USD1049218SOct 29, 2024

Ink cartridge

SEIKO EPSON CORP0 citations62

USD1016139SFeb 27, 2024

Ink cartridge

SEIKO EPSON CORP0 citations62

USD1016141SFeb 27, 2024

Ink cartridge

SEIKO EPSON CORP0 citations62

US10308032B2Jun 4, 2019

Cartridge for liquid jetting apparatus

SEIKO EPSON CORP1 citations62

US11807015B2Nov 7, 2023

Cartridge

SEIKO EPSON CORP0 citations61

US12589594B2Mar 31, 2026

Cartridge

SEIKO EPSON CORP0 citations52

US12472748B2Nov 18, 2025

Ink replenishment container and printer

SEIKO EPSON CORP0 citations52

US12358297B2Jul 15, 2025

Printer

SEIKO EPSON CORP0 citations52

US12330426B2Jun 17, 2025

Cartridge

SEIKO EPSON CORP0 citations52

US12330424B2Jun 17, 2025

Cartridge and printing system

SEIKO EPSON CORP0 citations52

US12311671B2May 27, 2025

Cartridge, printing system, and printing apparatus

SEIKO EPSON CORP0 citations52

US12172447B2Dec 24, 2024

Ink replenishment container

SEIKO EPSON CORP0 citations52

US12103312B2Oct 1, 2024

Ink replenishment container

SEIKO EPSON CORP0 citations52

US11919315B2Mar 5, 2024

Cartridge

SEIKO EPSON CORP0 citations52

US11878535B2Jan 23, 2024

Cartridge

SEIKO EPSON CORP0 citations52

US11850865B2Dec 26, 2023

Cartridge and printing system

SEIKO EPSON CORP0 citations52

US11673398B2Jun 13, 2023

Cartridge, printing system, and printing device

SEIKO EPSON CORP0 citations52

US11571905B2Feb 7, 2023

Ink supply bottle

SEIKO EPSON CORP0 citations52

US11014369B2May 25, 2021

Cartridge and liquid ejecting system

SEIKO EPSON CORP0 citations52

US10981391B2Apr 20, 2021

Liquid container and liquid ejecting apparatus

SEIKO EPSON CORP0 citations52

OYA SHUN

3 patents

USD656186SMar 20, 2012

Ink cartridge

OYA SHUN24 citations92

USD656540SMar 27, 2012

Ink cartridge

OYA SHUN9 citations83

USD656185SMar 20, 2012

Ink cartridge

OYA SHUN15 citations83

TOSHIBA KK

2 patents

US6598224B1Jul 22, 2003

Data management unit, computer system and computer-readable storage medium

TOSHIBA KK37 citations91

US6571153B1May 27, 2003

Electric power system protective control system, method of controlling electric power system protective control system and storage medium storing program module

TOSHIBA KK13 citations82

KOIZUMI YOSHIHIRO

2 patents

US8231209B2Jul 31, 2012

Liquid jetting system, liquid container, holder, and liquid jetting apparatus having holder

KOIZUMI YOSHIHIRO8 citations82

US8235511B2Aug 7, 2012

Liquid ejecting apparatus

KOIZUMI YOSHIHIRO1 citations61

TOPPAN PRINTING CO LTD

1 patent

US9731541B2Aug 15, 2017

Label, adhesive label, and printed product

TOPPAN PRINTING CO LTD2 citations69

Showing the top 50 of 67 patents by PatentIndex Score.