Dowa Electronics Materials Co., Ltd.

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing silver powder
- Patent number 12,194,541
- Issue date Jan 14, 2025
- Dowa Electronics Materials Co., Ltd.
- Satoko Sugawara
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silver powder and method for producing same
- Patent number 12,198,829
- Issue date Jan 14, 2025
- Dowa Electronics Materials Co., Ltd.
- Masanori Fujii
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silicon-oxide-coated soft magnetic powder, and method for manufactu...
- Patent number 12,121,965
- Issue date Oct 22, 2024
- Dowa Electronics Materials Co., Ltd.
- Hidefumi Fujita
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Semiconductor light-emitting element and method of producing the same
- Patent number 12,125,702
- Issue date Oct 22, 2024
- Dowa Electronics Materials Co., Ltd.
- Osamu Tanaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing optical semiconductor device and optical se...
- Patent number 12,113,155
- Issue date Oct 8, 2024
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-emitting element lamp and method for manufacturing the same
- Patent number 12,107,199
- Issue date Oct 1, 2024
- Dowa Electronics Materials Co., Ltd.
- Tsukasa Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Point source light-emitting diode and method of producing the same
- Patent number 12,095,004
- Issue date Sep 17, 2024
- Dowa Electronics Materials Co., Ltd.
- Masatoshi Iwata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Silicon oxide-coated iron powder, method for producing the same, mo...
- Patent number 12,057,260
- Issue date Aug 6, 2024
- Dowa Electronics Materials Co., Ltd.
- Daisuke Kodama
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Silver powder, production method thereof, and conductive paste
- Patent number 12,051,523
- Issue date Jul 30, 2024
- Dowa Electronics Materials Co., Ltd.
- Masanori Fujii
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Copper powder and method for producing same
- Patent number 12,049,684
- Issue date Jul 30, 2024
- Dowa Electronics Materials Co., Ltd.
- Masahiro Yoshida
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Bonding material and bonding method using same
- Patent number 12,048,964
- Issue date Jul 30, 2024
- Dowa Electronics Materials Co., Ltd.
- Keiichi Endoh
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Semiconductor light-emitting device
- Patent number 11,996,496
- Issue date May 28, 2024
- Dowa Electronics Materials Co., Ltd.
- Jumpei Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
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
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
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
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

Patents Applicationslast 30 patents

Information Patent Application
SILVER POWDER, MIXED SILVER POWDER, AND CONDUCTIVE PASTE, AND METHO...
- Publication number 20250050415
- Publication date Feb 13, 2025
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masanori FUJII
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SILVER POWDER, METHOD OF PRODUCING SILVER POWDER, AND CONDUCTIVE PASTE
- Publication number 20250041936
- Publication date Feb 6, 2025
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Taro TORIGOE
- B22 - CASTING POWDER METALLURGY
Information Patent Application
ULTRAVIOLET LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING SAME
- Publication number 20250040302
- Publication date Jan 30, 2025
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Yasuhiro WATANABE
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF MANUFACTURING SILICON-OXIDE-COATED SOFT MAGNETIC POWDER
- Publication number 20240416418
- Publication date Dec 19, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Hidefumi FUJITA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SILVER POWDER, CONDUCTIVE PASTE, METHOD OF PRODUCING SILVER POWDER,...
- Publication number 20240399454
- Publication date Dec 5, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masanori FUJII
- B22 - CASTING POWDER METALLURGY
Information Patent Application
GAAS WAFER, GAAS WAFER GROUP, AND METHOD OF PRODUCING GAAS INGOT
- Publication number 20240392475
- Publication date Nov 28, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Naoya SUNACHI
- C30 - CRYSTAL GROWTH
Information Patent Application
SILVER POWDER AND METHOD OF PRODUCING SILVER POWDER
- Publication number 20240375179
- Publication date Nov 14, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Satoko SUGAWARA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD FOR PRODUCING SILVER POWDER
- Publication number 20240278325
- Publication date Aug 22, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Satoko SUGAWARA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
PEROVSKITE-TYPE COMPOSITE OXIDE POWDER AND AIR ELECTRODE FOR SOLID...
- Publication number 20240266552
- Publication date Aug 8, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Toshihiko UEYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT-EMITTING ELEMENT AND METHOD OF MANUFACTURING THE SAME
- Publication number 20240234625
- Publication date Jul 11, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Shiori SASAKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SILVER POWDER AND METHOD OF PRODUCING SAME
- Publication number 20240227002
- Publication date Jul 11, 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 20240228316
- Publication date Jul 11, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Masahiro YOSHIDA
- C01 - INORGANIC CHEMISTRY
Information Patent Application
CARRIER CORE MATERIAL AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER U...
- Publication number 20240201612
- Publication date Jun 20, 2024
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Shinya SASAKI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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.
- Takuya KOJIMA
- 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.
- Junji SUGIURA
- 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
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
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
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

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

Method for producing silver powder

Silver powder and method for producing same

Silicon-oxide-coated soft magnetic powder, and method for manufactu...

Semiconductor light-emitting element and method of producing the same

Method of manufacturing optical semiconductor device and optical se...

Light-emitting element lamp and method for manufacturing the same

Point source light-emitting diode and method of producing the same

Silicon oxide-coated iron powder, method for producing the same, mo...

Silver powder, production method thereof, and conductive paste

Copper powder and method for producing same

Bonding material and bonding method using same

Semiconductor light-emitting device

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

Magnetic powder for magnetic recording medium

Method of manufacturing semiconductor optical device and intermedia...

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

Patents Applicationslast 30 patents

SILVER POWDER, MIXED SILVER POWDER, AND CONDUCTIVE PASTE, AND METHO...

SILVER POWDER, METHOD OF PRODUCING SILVER POWDER, AND CONDUCTIVE PASTE

ULTRAVIOLET LIGHT-EMITTING ELEMENT AND METHOD OF PRODUCING SAME

METHOD OF MANUFACTURING SILICON-OXIDE-COATED SOFT MAGNETIC POWDER

SILVER POWDER, CONDUCTIVE PASTE, METHOD OF PRODUCING SILVER POWDER,...

GAAS WAFER, GAAS WAFER GROUP, AND METHOD OF PRODUCING GAAS INGOT

SILVER POWDER AND METHOD OF PRODUCING SILVER POWDER

METHOD FOR PRODUCING SILVER POWDER

PEROVSKITE-TYPE COMPOSITE OXIDE POWDER AND AIR ELECTRODE FOR SOLID...

LIGHT-EMITTING ELEMENT AND METHOD OF MANUFACTURING THE SAME

SILVER POWDER AND METHOD OF PRODUCING SAME

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

CARRIER CORE MATERIAL AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER U...

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...

SILVER POWDER, PRODUCTION METHOD THEREOF, AND CONDUCTIVE PASTE

GaAs WAFER AND METHOD OF PRODUCING GaAs INGOT

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

Trademarklast 30 trademarks

86102546 - DOWA POWER SINTERING PASTE

79116892 - DOUVLEDS

79117502 - UVNINJA