Dowa Electronics Materials Co., Ltd.

Organization

Tokyo, JP

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
III-nitride semiconductor light-emitting device comprising barrier...
- Patent number 11,984,535
- Issue date May 14, 2024
- Dowa Electronics Materials Co., Ltd.
- Yasuhiro Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing semiconductor optical device and intermedia...
- Patent number 11,894,502
- Issue date Feb 6, 2024
- Dowa Electronics Materials Co., Ltd.
- Yuta Koshika
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic powder for magnetic recording medium
- Patent number 11,894,171
- Issue date Feb 6, 2024
- Dowa Electronics Materials Co., Ltd.
- Hirohisa Omoto
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Semiconductor light-emitting element and method of producing semico...
- Patent number 11,888,090
- Issue date Jan 30, 2024
- Dowa Electronics Materials Co., Ltd.
- Yuta Koshika
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Composite oxide powder
- Patent number 11,866,346
- Issue date Jan 9, 2024
- Dowa Electronics Materials Co., Ltd.
- Kazumasa Ikari
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Silver powder, method for producing the same, and conductive paste
- Patent number 11,819,914
- Issue date Nov 21, 2023
- Dowa Electronics Materials Co., Ltd.
- Masanori Fujii
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silver powder, production method thereof, and conductive paste
- Patent number 11,804,313
- Issue date Oct 31, 2023
- Dowa Electronics Materials Co., Ltd.
- Masanori Fujii
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
III-nitride semiconductor light-emitting device and method of produ...
- Patent number 11,804,567
- Issue date Oct 31, 2023
- Dowa Electronics Materials Co., Ltd.
- Yasuhiro Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spherical silver powder and method for producing same
- Patent number 11,697,863
- Issue date Jul 11, 2023
- Dowa Electronics Materials Co., Ltd.
- Masaya Osako
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Copper powder and method for producing same
- Patent number 11,692,241
- Issue date Jul 4, 2023
- Dowa Electronics Materials Co., Ltd.
- Masahiro Yoshida
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Semiconductor light-emitting element
- Patent number 11,637,220
- Issue date Apr 25, 2023
- Dowa Electronics Materials Co., Ltd.
- Jumpei Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Carrier core material and electrophotographic development carrier u...
- Patent number 11,556,070
- Issue date Jan 17, 2023
- Dowa Electronics Materials Co., Ltd.
- Takeshi Kawauchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of producing spherical silver powder
- Patent number 11,548,068
- Issue date Jan 10, 2023
- Dowa Electronics Materials Co., Ltd.
- Kemmei Otsubo
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Semiconductor light-emitting element and method of manufacturing th...
- Patent number 11,515,448
- Issue date Nov 29, 2022
- Dowa Electronics Materials Co., Ltd.
- Jumpei Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor light-emitting device and method of manufacturing the...
- Patent number 11,508,875
- Issue date Nov 22, 2022
- Dowa Electronics Materials Co., Ltd.
- Jumpei Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Solution and method for producing the same, and a method for produc...
- Patent number 11,502,294
- Issue date Nov 15, 2022
- Dowa Electronics Materials Co., Ltd.
- Yoshiaki Aiki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Joining material and joining method using same
- Patent number 11,453,053
- Issue date Sep 27, 2022
- Dowa Electronics Materials Co., Ltd.
- Satoru Kurita
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Fine silver particle dispersion
- Patent number 11,441,010
- Issue date Sep 13, 2022
- Dowa Electronics Materials Co., Ltd.
- Shingo Teragawa
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silver powder and method for producing same
- Patent number 11,420,256
- Issue date Aug 23, 2022
- Dowa Electronics Materials Co., Ltd.
- Yoshiyuki Michiaki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Spherical silver powder and method for producing same
- Patent number 11,424,049
- Issue date Aug 23, 2022
- Dowa Electronics Materials Co., Ltd.
- Koji Hirata
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silver powder mixture, method for producing same, and conductive paste
- Patent number 11,413,685
- Issue date Aug 16, 2022
- Dowa Electronics Materials Co., Ltd.
- Genta Sasaki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of manufacturing semiconductor optical device and semiconduc...
- Patent number 11,417,793
- Issue date Aug 16, 2022
- Dowa Electronics Materials Co., Ltd.
- Jumpei Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silver powder and method for producing same
- Patent number 11,407,030
- Issue date Aug 9, 2022
- Dowa Electronics Materials Co., Ltd.
- Atsushi Ebara
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Hexagonal ferrite magnetic powder
- Patent number 11,404,190
- Issue date Aug 2, 2022
- Dowa Electronics Materials Co., Ltd.
- Hirohisa Omoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Iron based oxide magnetic powder and method for producing same
- Patent number 11,401,170
- Issue date Aug 2, 2022
- Dowa Electronics Materials Co., Ltd.
- Shin-ichi Ohkoshi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Spherical silver powder
- Patent number 11,376,659
- Issue date Jul 5, 2022
- Dowa Electronics Materials Co., Ltd.
- Masaya Osako
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Deep ultraviolet light-emitting device and method of manufacturing...
- Patent number 11,302,843
- Issue date Apr 12, 2022
- Dowa Electronics Materials Co., Ltd.
- Yasuhiro Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrically conductive paste
- Patent number 11,270,810
- Issue date Mar 8, 2022
- Dowa Electronics Materials Co., Ltd.
- Aiko Hirata
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Epsilon-type iron oxide magnetic particles and method for producing...
- Patent number 11,264,155
- Issue date Mar 1, 2022
- Dowa Electronics Materials Co., Ltd.
- Kazuhiro Yamaga
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Iron powder, silicon oxide coated iron powder,, molded article for...
- Patent number 11,247,265
- Issue date Feb 15, 2022
- Dowa Electronics Materials Co., Ltd.
- Hidenori Yamaji
- B22 - CASTING POWDER METALLURGY

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Patents Applicationslast 30 patents

Information Patent Application
SILVER FLAKE POWDER AND PRODUCTION METHOD THEREOF, AND ELECTRICALLY...
- Publication number 20240157436
- Publication date May 16, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD OF PRODUCING GAAS WAFER, AND GAAS WAFER GROUP
- Publication number 20240162031
- Publication date May 16, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILVER POWDER AND METHOD OF PRODUCING SAME
- Publication number 20240149343
- Publication date May 9, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yuma HIGASHI
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SILVER POWDER AND METHOD OF PRODUCING SAME
- Publication number 20240131580
- Publication date Apr 25, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Kaori TOKUSADA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
POWDER INCLUDING NIOBIUM COMPLEX AND LITHIUM AND PRODUCTION METHOD...
- Publication number 20240132368
- Publication date Apr 25, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masahiro YOSHIDA
- C01 - INORGANIC CHEMISTRY
Information Patent Application
SEMICONDUCTOR LIGHT-EMITTING DEVICE, SEMICONDUCTOR LIGHT-EMITTING D...
- Publication number 20240030386
- Publication date Jan 25, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Takashi MOMOSE
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GaAs WAFER AND METHOD OF PRODUCING GaAs INGOT
- Publication number 20230392291
- Publication date Dec 7, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
SILVER POWDER, PRODUCTION METHOD THEREOF, AND CONDUCTIVE PASTE
- Publication number 20230395280
- Publication date Dec 7, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- MASANORI FUJII
- B22 - CASTING POWDER METALLURGY
Information Patent Application
MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHO...
- Publication number 20230352224
- Publication date Nov 2, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Akifumi ONODERA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METAL PASTE FOR BONDING AND BONDING METHOD
- Publication number 20230311249
- Publication date Oct 5, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Keiichi ENDOH
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHO...
- Publication number 20230317337
- Publication date Oct 5, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Akifumi ONODERA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COPPER POWDER AND METHOD FOR PRODUCING SAME
- Publication number 20230279523
- Publication date Sep 7, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masahiro Yoshida
- B22 - CASTING POWDER METALLURGY
Information Patent Application
GaAs INGOT AND METHOD OF PRODUCING GaAs INGOT, AND GaAs WAFER
- Publication number 20230243067
- Publication date Aug 3, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
PEROVSKITE-TYPE COMPOSITE OXIDE POWDER
- Publication number 20230216065
- Publication date Jul 6, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Shintaro OGAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISPERSED IRON OXIDE MAGNETIC POWDER SLURRY AND METHOD FOR PRODUCIN...
- Publication number 20230192508
- Publication date Jun 22, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yasuto MIYAMOTO
- C01 - INORGANIC CHEMISTRY
Information Patent Application
COMPOSITE OXIDE POWDER
- Publication number 20230197972
- Publication date Jun 22, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Kazumasa IKARI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILVER POWDER, METHOD FOR PRODUCING THE SAME, AND CONDUCTIVE PASTE
- Publication number 20230159376
- Publication date May 25, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masanori Fujii
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING THE SAME
- Publication number 20230155061
- Publication date May 18, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Osamu TANAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR LIGHT-EMITTING ELEMENT
- Publication number 20230114703
- Publication date Apr 13, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Jumpei YAMAMOTO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
HEXAGONAL FERRITE MAGNETIC POWDER AND METHOD FOR PRODUCING SAME
- Publication number 20230081863
- Publication date Mar 16, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masaki KOSHIKO
- C01 - INORGANIC CHEMISTRY
Information Patent Application
SEMICONDUCTOR LIGHT-EMITTING DEVICE
- Publication number 20230079138
- Publication date Mar 16, 2023
- DOWA Electronics Materials Co., Ltd.
- Jumpei YAMAMOTO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR PRODUCING SILVER POWDER
- Publication number 20230073837
- Publication date Mar 9, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Satoko SUGAWARA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
LITHIUM-CONTAINING OXIDE PRECURSOR SOLUTION FOR COATING ELECTRODE A...
- Publication number 20230051009
- Publication date Feb 16, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masahiro YOSHIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ULTRAVIOLET LIGHT RECEIVING DEVICE
- Publication number 20230040765
- Publication date Feb 9, 2023
- DOWA HOLDINGS Co., Ltd.
- Ryuichi TOBA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COATED ACTIVE MATERIAL AND METHOD FOR PRODUCING THE SAME
- Publication number 20230045543
- Publication date Feb 9, 2023
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Kazuki MURAISHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING THE SAME
- Publication number 20220406967
- Publication date Dec 22, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yoshitaka KADOWAKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CARRIER CORE MATERIAL, AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER...
- Publication number 20220390874
- Publication date Dec 8, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yuto KAMAI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SILICON-OXIDE-COATED SOFT MAGNETIC POWDER, AND METHOD FOR MANUFACTU...
- Publication number 20220392676
- Publication date Dec 8, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Hidefumi FUJITA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SEMICONDUCTOR OPTICAL DEVICE AND METHOD OF PRODUCING THE SAME
- Publication number 20220367749
- Publication date Nov 17, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yoshitaka KADOWAKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
IRON-BASED OXIDE MAGNETIC POWDER AND METHOD FOR PRODUCING SAME
- Publication number 20220344087
- Publication date Oct 27, 2022
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yasuto MIYAMOTO
- B82 - NANO-TECHNOLOGY

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Trademarklast 30 trademarks

Information Trademark
86102546 - DOWA POWER SINTERING PASTE
- Serial number 86102546
- Registration number 4786536
- Filing date Oct 26, 2013
- Dowa Electronics Materials Co., Ltd.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
79116892 - DOUVLEDS
- Serial number 79116892
- Registration number 4370483
- Filing date Apr 13, 2012
- DOWA ELECTRONICS MATERIALS CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
79117502 - UVNINJA
- Serial number 79117502
- Registration number 4427042
- Filing date Apr 13, 2012
- DOWA ELECTRONICS MATERIALS CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments

Dowa Electronics Materials Co., Ltd.

Organization

Patents Grantslast 30 patents

III-nitride semiconductor light-emitting device comprising barrier...

Method of manufacturing semiconductor optical device and intermedia...

Magnetic powder for magnetic recording medium

Semiconductor light-emitting element and method of producing semico...

Composite oxide powder

Silver powder, method for producing the same, and conductive paste

Silver powder, production method thereof, and conductive paste

III-nitride semiconductor light-emitting device and method of produ...

Spherical silver powder and method for producing same

Copper powder and method for producing same

Semiconductor light-emitting element

Carrier core material and electrophotographic development carrier u...

Method of producing spherical silver powder

Semiconductor light-emitting element and method of manufacturing th...

Semiconductor light-emitting device and method of manufacturing the...

Solution and method for producing the same, and a method for produc...

Joining material and joining method using same

Fine silver particle dispersion

Silver powder and method for producing same

Spherical silver powder and method for producing same

Silver powder mixture, method for producing same, and conductive paste

Method of manufacturing semiconductor optical device and semiconduc...

Silver powder and method for producing same

Hexagonal ferrite magnetic powder

Iron based oxide magnetic powder and method for producing same

Spherical silver powder

Deep ultraviolet light-emitting device and method of manufacturing...

Electrically conductive paste

Epsilon-type iron oxide magnetic particles and method for producing...

Iron powder, silicon oxide coated iron powder,, molded article for...

Patents Applicationslast 30 patents

SILVER FLAKE POWDER AND PRODUCTION METHOD THEREOF, AND ELECTRICALLY...

METHOD OF PRODUCING GAAS WAFER, AND GAAS WAFER GROUP

SILVER POWDER AND METHOD OF PRODUCING SAME

SILVER POWDER AND METHOD OF PRODUCING SAME

POWDER INCLUDING NIOBIUM COMPLEX AND LITHIUM AND PRODUCTION METHOD...

SEMICONDUCTOR LIGHT-EMITTING DEVICE, SEMICONDUCTOR LIGHT-EMITTING D...

GaAs WAFER AND METHOD OF PRODUCING GaAs INGOT

SILVER POWDER, PRODUCTION METHOD THEREOF, AND CONDUCTIVE PASTE

MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHO...

METAL PASTE FOR BONDING AND BONDING METHOD

MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHO...

COPPER POWDER AND METHOD FOR PRODUCING SAME

GaAs INGOT AND METHOD OF PRODUCING GaAs INGOT, AND GaAs WAFER

PEROVSKITE-TYPE COMPOSITE OXIDE POWDER

DISPERSED IRON OXIDE MAGNETIC POWDER SLURRY AND METHOD FOR PRODUCIN...

COMPOSITE OXIDE POWDER

SILVER POWDER, METHOD FOR PRODUCING THE SAME, AND CONDUCTIVE PASTE

SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING THE SAME

SEMICONDUCTOR LIGHT-EMITTING ELEMENT

HEXAGONAL FERRITE MAGNETIC POWDER AND METHOD FOR PRODUCING SAME

SEMICONDUCTOR LIGHT-EMITTING DEVICE

METHOD FOR PRODUCING SILVER POWDER

LITHIUM-CONTAINING OXIDE PRECURSOR SOLUTION FOR COATING ELECTRODE A...

ULTRAVIOLET LIGHT RECEIVING DEVICE

COATED ACTIVE MATERIAL AND METHOD FOR PRODUCING THE SAME

LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING THE SAME

CARRIER CORE MATERIAL, AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER...

SILICON-OXIDE-COATED SOFT MAGNETIC POWDER, AND METHOD FOR MANUFACTU...

SEMICONDUCTOR OPTICAL DEVICE AND METHOD OF PRODUCING THE SAME

IRON-BASED OXIDE MAGNETIC POWDER AND METHOD FOR PRODUCING SAME

Trademarklast 30 trademarks

86102546 - DOWA POWER SINTERING PASTE

79116892 - DOUVLEDS

79117502 - UVNINJA