LexDanaLexDanabeta
Inventor

Keiji Tomizawa

Inventor
Yokohama, JP

Overview

50→
Patents
2004–2019
Patent span
Performing operations
Primary field (CPC B)

Patents· 50 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B41Jprimary
B41JTypewriters93%
Y10TTechnical subjects covered by former us classification4%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%
G06KGraphical data reading2%
PatentTitleYear
10,322,578Liquid ejection head and liquid ejection apparatus201910,308,018Printing apparatus and method of controlling printhead201910,300,698Liquid ejection head20199,969,163Liquid discharge head20189,889,650'Liquid ejecting head, ejecting element substrate and liquid ejecting apparatus'20189,731,503'Liquid discharge head and liquid discharge apparatus using the same'20179,676,181'Method for controlling liquid ejection head and liquid ejecting apparatus'20179,283,755'Liquid ejection head'20169,266,325'Print head and inkjet printing apparatus'20169,233,536'Liquid ejection head, liquid ejection apparatus, and method of manufacturing liquid ejection head'20169,156,263'Liquid ejection head and method of producing the same'20159,044,944'Liquid discharge head and method of making the same'20159,004,630'Inkjet printing apparatus and control method thereof'20158,985,721'Printing apparatus and aging method'20158,945,817'Process for producing chip'20158,877,431'Process for producing liquid ejection head'20148,845,081'Liquid discharge head'20148,342,631'Inkjet print apparatus and inkjet print method'20138,342,645'Printing apparatus and control method therefor'20138,342,648'Inkjet head'20138,287,091'Inkjet printing apparatus and inkjet printing method'20128,231,203'Ink jet print head, ink jet printing apparatus and ink jet printing method'20128,210,655'Liquid ejection head and manufacturing method of liquid ejection head'20128,177,329'Ink jet print head'20128,162,446'Print head'20128,132,895'Printhead substrate, printhead, head cartridge, and printing apparatus'20128,100,505'Liquid ejecting head and manufacturing dimension control method'20128,087,759'Print head with offset ejection ports'20128,083,322'Ink-jet recording head'20118,033,651'Liquid ejection head and printing apparatus'20117,984,976'Liquid recording head'20117,980,663'Liquid ejection head'20117,963,635'Inkjet print head'20117,963,633'Ink jet recording head and ink jet recording apparatus'20117,938,511'Liquid ejection head, inkjet printing apparatus and liquid ejecting method'20117,832,843'Liquid jet head'20107,784,904'Liquid jet head'20107,771,026'Ink jet recording head and liquid jetting method'20107,735,962'Ink jet print head'20107,695,088'Ink jet printing apparatus and ink jet printing method'20107,654,648'Liquid recording head'20107,628,472'Ink-jet recording head'2009RE040994'Ink jet recording head'20097,591,537'Ink jet recording head'20097,556,330'Recording apparatus and recording method'20097,090,334'Ink jet record head'20066,984,026'Ink jet record head'20066,971,736'Ink jet record head'20056,935,723'Ink jet recording head'20056,830,317'Ink jet recording head'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2019Patents assigned to CANON KK (50)· patent assignee history
2004–2011Based in Kanagawa, JP· patent location history
2009–2019Based in Yokohama, JP· patent location history
2011–2016Patents assigned to TOMIZAWA KEIJI (14)· patent assignee history
2012–2016Patents assigned to OIKAWA MASAKI (13)· patent assignee history
2012Patents assigned to YAMANE TORU (6)· patent assignee history
2012–2013Patents assigned to AKAMA YUICHIRO (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK502004–2019
TOMIZAWA KEIJIself142011–2016
OIKAWA MASAKI132012–2016
YAMANE TORU62012
AKAMA YUICHIRO52012–2013
Locations
LocationPatentsSpan
Yokohama, JP422009–2019
Kanagawa, JP82004–2011