Keiji Tomizawa

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Liquid ejection apparatus and control method
- Patent number 12,145,359
- Issue date Nov 19, 2024
- Canon Kabushiki Kaisha
- Yoshihiro Hamada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection apparatus and control method
- Patent number 12,053,979
- Issue date Aug 6, 2024
- Canon Kabushiki Kaisha
- So Aizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection apparatus and control method
- Patent number 12,023,924
- Issue date Jul 2, 2024
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head and liquid ejection apparatus
- Patent number 11,712,891
- Issue date Aug 1, 2023
- Canon Kabushiki Kaisha
- Yoshihiro Hamada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head including a plurality of recording element sub...
- Patent number 11,597,203
- Issue date Mar 7, 2023
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head and method of manufacturing the same
- Patent number 11,077,658
- Issue date Aug 3, 2021
- Canon Kabushiki Kaisha
- Tomoki Ishiwata
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head and liquid ejection apparatus
- Patent number 10,322,578
- Issue date Jun 18, 2019
- Canon Kabushiki Kaisha
- Tomoko Kudo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Printing apparatus and method of controlling printhead
- Patent number 10,308,018
- Issue date Jun 4, 2019
- Canon Kabushiki Kaisha
- Yosuke Miura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head
- Patent number 10,300,698
- Issue date May 28, 2019
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid discharge head
- Patent number 9,969,163
- Issue date May 15, 2018
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejecting head, ejecting element substrate and liquid ejectin...
- Patent number 9,889,650
- Issue date Feb 13, 2018
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid discharge head and liquid discharge apparatus using the same
- Patent number 9,731,503
- Issue date Aug 15, 2017
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method for controlling liquid ejection head and liquid ejecting app...
- Patent number 9,676,181
- Issue date Jun 13, 2017
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head
- Patent number 9,283,755
- Issue date Mar 15, 2016
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Print head and inkjet printing apparatus
- Patent number 9,266,325
- Issue date Feb 23, 2016
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head, liquid ejection apparatus, and method of manu...
- Patent number 9,233,536
- Issue date Jan 12, 2016
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head and method of producing the same
- Patent number 9,156,263
- Issue date Oct 13, 2015
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid discharge head and method of making the same
- Patent number 9,044,944
- Issue date Jun 2, 2015
- Canon Kabushiki Kaisha
- Atsushi Omura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet printing apparatus and control method thereof
- Patent number 9,004,630
- Issue date Apr 14, 2015
- Canon Kabushiki Kaisha
- Toshikazu Nagatsuka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Printing apparatus and aging method
- Patent number 8,985,721
- Issue date Mar 24, 2015
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process for producing chip
- Patent number 8,945,817
- Issue date Feb 3, 2015
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process for producing liquid ejection head
- Patent number 8,877,431
- Issue date Nov 4, 2014
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid discharge head
- Patent number 8,845,081
- Issue date Sep 30, 2014
- Canon Kabushiki Kaisha
- Masaki Oikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet head
- Patent number 8,342,648
- Issue date Jan 1, 2013
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet print apparatus and inkjet print method
- Patent number 8,342,631
- Issue date Jan 1, 2013
- Canon Kabushiki Kaisha
- Masayuki Kyoshima
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Printing apparatus and control method therefor
- Patent number 8,342,645
- Issue date Jan 1, 2013
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet printing apparatus and inkjet printing method
- Patent number 8,287,091
- Issue date Oct 16, 2012
- Canon Kabushiki Kaisha
- Masayuki Kyoshima
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink jet print head, ink jet printing apparatus and ink jet printing...
- Patent number 8,231,203
- Issue date Jul 31, 2012
- Canon Kabushiki Kaisha
- Yuichiro Akama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Liquid ejection head and manufacturing method of liquid ejection head
- Patent number 8,210,655
- Issue date Jul 3, 2012
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink jet print head
- Patent number 8,177,329
- Issue date May 15, 2012
- Canon Kabushiki Kaisha
- Mitsuhiro Matsumoto
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS
- Publication number 20240262107
- Publication date Aug 8, 2024
- Canon Kabushiki Kaisha
- SO AIZAWA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID DISCHARGE HEAD
- Publication number 20240208215
- Publication date Jun 27, 2024
- Canon Kabushiki Kaisha
- YOSHIHIRO HAMADA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION APPARATUS, METHOD FOR CONTROLLING LIQUID EJECTION A...
- Publication number 20240208225
- Publication date Jun 27, 2024
- Canon Kabushiki Kaisha
- FUMI TANAKA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION APPARATUS AND LIQUID EJECTION CONTROL METHOD
- Publication number 20240190129
- Publication date Jun 13, 2024
- Canon Kabushiki Kaisha
- TAKATSUGU MORIYA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD
- Publication number 20240157705
- Publication date May 16, 2024
- Canon Kabushiki Kaisha
- SHIN ISHIMATSU
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION APPARATUS AND CONTROL METHOD
- Publication number 20230103488
- Publication date Apr 6, 2023
- Canon Kabushiki Kaisha
- So Aizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION APPARATUS AND CONTROL METHOD
- Publication number 20230070795
- Publication date Mar 9, 2023
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION APPARATUS AND CONTROL METHOD
- Publication number 20230007995
- Publication date Jan 12, 2023
- Canon Kabushiki Kaisha
- Yoshihiro Hamada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS
- Publication number 20210402770
- Publication date Dec 30, 2021
- Canon Kabushiki Kaisha
- Yoshihiro Hamada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS
- Publication number 20210402765
- Publication date Dec 30, 2021
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE SAME
- Publication number 20200070513
- Publication date Mar 5, 2020
- Canon Kabushiki Kaisha
- Tomoki Ishiwata
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS
- Publication number 20180361734
- Publication date Dec 20, 2018
- Canon Kabushiki Kaisha
- Tomoko Kudo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD
- Publication number 20180345668
- Publication date Dec 6, 2018
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTHEAD
- Publication number 20180111370
- Publication date Apr 26, 2018
- Canon Kabushiki Kaisha
- Yosuke Miura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID DISCHARGE HEAD
- Publication number 20170136769
- Publication date May 18, 2017
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
METHOD FOR CONTROLLING LIQUID EJECTION HEAD AND LIQUID EJECTING APP...
- Publication number 20170028712
- Publication date Feb 2, 2017
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTING HEAD, EJECTING ELEMENT SUBSTRATE AND LIQUID EJCTING...
- Publication number 20160339700
- Publication date Nov 24, 2016
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD
- Publication number 20150290934
- Publication date Oct 15, 2015
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, AND METHOD OF MANU...
- Publication number 20150210077
- Publication date Jul 30, 2015
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID EJECTION HEAD AND METHOD OF PRODUCING THE SAME
- Publication number 20150130873
- Publication date May 14, 2015
- Canon Kabushiki Kaisha
- Takuma KODOI
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID DISCHARGE HEAD AND METHOD OF MAKING THE SAME
- Publication number 20140307028
- Publication date Oct 16, 2014
- Atsushi Omura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PROCESS FOR PRODUCING LIQUID EJECTION HEAD
- Publication number 20140199633
- Publication date Jul 17, 2014
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PROCESS FOR PRODUCING CHIP
- Publication number 20140198157
- Publication date Jul 17, 2014
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PRINTING APPARATUS AND AGING METHOD
- Publication number 20140152725
- Publication date Jun 5, 2014
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PRINT HEAD AND INKJET PRINTING APPARATUS
- Publication number 20140125737
- Publication date May 8, 2014
- Canon Kabushiki Kaisha
- Keiji Tomizawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INKJET PRINTING APPARATUS AND CONTROL METHOD THEREOF
- Publication number 20130307889
- Publication date Nov 21, 2013
- Canon Kabushiki Kaisha
- Toshikazu Nagatsuka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS USING THE SAME
- Publication number 20130286096
- Publication date Oct 31, 2013
- Canon Kabushiki Kaisha
- Takuma Kodoi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LIQUID DISCHARGE HEAD
- Publication number 20130076835
- Publication date Mar 28, 2013
- Canon Kabushiki Kaisha
- Masaki Oikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INKJET PRINT APPARATUS AND INKJET PRINT METHOD
- Publication number 20110084999
- Publication date Apr 14, 2011
- Canon Kabushiki Kaisha
- Masayuki Kyoshima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INKJET HEAD
- Publication number 20110074884
- Publication date Mar 31, 2011
- Canon Kabushiki Kaisha
- Chiaki Muraoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Keiji Tomizawa

Person

Patents Grantslast 30 patents

Liquid ejection apparatus and control method

Liquid ejection apparatus and control method

Liquid ejection apparatus and control method

Liquid ejection head and liquid ejection apparatus

Liquid ejection head including a plurality of recording element sub...

Liquid ejection head and method of manufacturing the same

Liquid ejection head and liquid ejection apparatus

Printing apparatus and method of controlling printhead

Liquid ejection head

Liquid discharge head

Liquid ejecting head, ejecting element substrate and liquid ejectin...

Liquid discharge head and liquid discharge apparatus using the same

Method for controlling liquid ejection head and liquid ejecting app...

Liquid ejection head

Print head and inkjet printing apparatus

Liquid ejection head, liquid ejection apparatus, and method of manu...

Liquid ejection head and method of producing the same

Liquid discharge head and method of making the same

Inkjet printing apparatus and control method thereof

Printing apparatus and aging method

Process for producing chip

Process for producing liquid ejection head

Liquid discharge head

Inkjet head

Inkjet print apparatus and inkjet print method

Printing apparatus and control method therefor

Inkjet printing apparatus and inkjet printing method

Ink jet print head, ink jet printing apparatus and ink jet printing...

Liquid ejection head and manufacturing method of liquid ejection head

Ink jet print head

Patents Applicationslast 30 patents

LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

LIQUID DISCHARGE HEAD

LIQUID EJECTION APPARATUS, METHOD FOR CONTROLLING LIQUID EJECTION A...

LIQUID EJECTION APPARATUS AND LIQUID EJECTION CONTROL METHOD

LIQUID EJECTION HEAD

LIQUID EJECTION APPARATUS AND CONTROL METHOD

LIQUID EJECTION APPARATUS AND CONTROL METHOD

LIQUID EJECTION APPARATUS AND CONTROL METHOD

LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE SAME

LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

LIQUID EJECTION HEAD

PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTHEAD

LIQUID DISCHARGE HEAD

METHOD FOR CONTROLLING LIQUID EJECTION HEAD AND LIQUID EJECTING APP...

LIQUID EJECTING HEAD, EJECTING ELEMENT SUBSTRATE AND LIQUID EJCTING...

LIQUID EJECTION HEAD

LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, AND METHOD OF MANU...

LIQUID EJECTION HEAD AND METHOD OF PRODUCING THE SAME

LIQUID DISCHARGE HEAD AND METHOD OF MAKING THE SAME

PROCESS FOR PRODUCING LIQUID EJECTION HEAD

PROCESS FOR PRODUCING CHIP

PRINTING APPARATUS AND AGING METHOD

PRINT HEAD AND INKJET PRINTING APPARATUS

INKJET PRINTING APPARATUS AND CONTROL METHOD THEREOF

LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS USING THE SAME

LIQUID DISCHARGE HEAD

INKJET PRINT APPARATUS AND INKJET PRINT METHOD

INKJET HEAD