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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Copper alloy plate and method for producing same
Patent number
12,049,690
Issue date
Jul 30, 2024
Dowa Metaltech Co., Ltd.
Kazuki Yoshida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Cu—Ti-based copper alloy sheet material, method for producing the s...
Patent number
11,946,127
Issue date
Apr 2, 2024
Dowa Metaltech Co., Ltd.
Takuya Hashimoto
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Cu—Ni—Al based copper alloy sheet material, method for producing sa...
Patent number
11,946,129
Issue date
Apr 2, 2024
Dowa Metaltech Co., Ltd.
Toshiya Shutoh
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Composite plating material and method for producing the same
Patent number
11,926,917
Issue date
Mar 12, 2024
Dowa Metaltech Co., Ltd.
Yukiya Kato
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Composite plated product and method for producing same
Patent number
11,920,255
Issue date
Mar 5, 2024
Dowa Metaltech Co., Ltd.
Hirotaka Kotani
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Method for producing heat radiation member
Patent number
11,919,288
Issue date
Mar 5, 2024
Dowa Metaltech Co., Ltd.
Hideyo Osanai
B22 - CASTING POWDER METALLURGY
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Patent Grant
Plated product and method for producing same
Patent number
11,898,263
Issue date
Feb 13, 2024
Dowa Metaltech Co., Ltd.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Method for producing insulated circuit board using a mask and parti...
Patent number
11,761,108
Issue date
Sep 19, 2023
Dowa Metaltech Co., Ltd.
Masaaki Higo
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Semiconductor module and method for manufacturing same
Patent number
11,749,581
Issue date
Sep 5, 2023
Fuji Electric Co., Ltd.
Yuhei Nishida
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Copper alloy plate and method for producing same
Patent number
11,591,673
Issue date
Feb 28, 2023
Dowa Metaltech Co., Ltd.
Naota Higami
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Cu—Co—Si-based copper alloy sheet material and method for producing...
Patent number
11,332,815
Issue date
May 17, 2022
Dowa Metaltech Co., Ltd.
Hiroshi Hyodo
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Sheet matertal of copper alloy and method for producing same
Patent number
11,293,084
Issue date
Apr 5, 2022
Dowa Metaltech Co., Ltd.
Naota Higami
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Heat sink plate
Patent number
11,285,701
Issue date
Mar 29, 2022
THEGOODSYSTEM CORP.
Meoung-whan Cho
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Patent Grant
Composite plated product and method for producing same
Patent number
11,225,726
Issue date
Jan 18, 2022
Dowa Metaltech Co., Ltd.
Tsuyoshi Ito
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Composite plated product and method for producing same
Patent number
11,208,730
Issue date
Dec 28, 2021
Dowa Metaltech Co., Ltd.
Yuta Sonoda
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Patent Grant
Heat radiating plate and method for producing same
Patent number
11,162,745
Issue date
Nov 2, 2021
Dowa Metaltech Co., Ltd.
Satoru Ideguchi
F28 - HEAT EXCHANGE IN GENERAL
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Patent Grant
Silver-plated product and method for producing same
Patent number
11,142,839
Issue date
Oct 12, 2021
Dowa Metaltech Co., Ltd.
Shunki Sadamori
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Tin-plated product and method for producing same
Patent number
11,078,587
Issue date
Aug 3, 2021
Dowa Metaltech Co., Ltd.
Yuta Sonoda
B32 - LAYERED PRODUCTS
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Patent Grant
Cu-Ni-Si based copper alloy sheet material and production method
Patent number
11,047,023
Issue date
Jun 29, 2021
Dowa Metaltech Co., Ltd.
Toshiya Shutoh
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Tin-plated product and method for producing same
Patent number
10,982,345
Issue date
Apr 20, 2021
Dowa Metaltech Co., Ltd.
Hirotaka Kotani
B32 - LAYERED PRODUCTS
Information
Patent Grant
Tin-plated product and method for producing same
Patent number
10,985,485
Issue date
Apr 20, 2021
Dowa Metaltech Co., Ltd.
Hiroto Narieda
B32 - LAYERED PRODUCTS
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Patent Grant
Copper alloy sheet material and current-carrying component
Patent number
10,844,468
Issue date
Nov 24, 2020
Dowa Metaltech Co., Ltd.
Kuniaki Miyagi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Tin-plated product and method for producing same
Patent number
10,829,862
Issue date
Nov 10, 2020
Dowa Metaltech Co., Ltd.
Tatsunori Murata
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Producing metal/ceramic circuit board by removing residual silver
Patent number
10,834,823
Issue date
Nov 10, 2020
Dowa Metaltech Co., Ltd.
Takashi Ideno
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent Grant
Copper alloy sheet material
Patent number
10,745,787
Issue date
Aug 18, 2020
Dowa Metaltech Co., Ltd.
Tsuyoshi Ito
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Tin-plated product and method for producing same
Patent number
10,676,835
Issue date
Jun 9, 2020
Dowa Metaltech Co., Ltd.
Hirotaka Kotani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Heat radiating plate with supporting members and protrusion members
Patent number
10,619,948
Issue date
Apr 14, 2020
Dowa Metaltech Co., Ltd.
Satoru Ideguchi
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Silver-plated product and method for producing same
Patent number
10,597,791
Issue date
Mar 24, 2020
Dowa Metaltech Co., Ltd.
Shunki Sadamori
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Electronic part mounting substrate and method for producing same
Patent number
10,510,557
Issue date
Dec 17, 2019
Dowa Metaltech Co., Ltd.
Naoya Sunachi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Silver-plated product and method for producing same
Patent number
10,501,858
Issue date
Dec 10, 2019
Dowa Metaltech Co., Ltd.
Shunki Sadamori
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Patents Applications
last 30 patents
Information
Patent Application
SILVER-PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20240287697
Publication date
Aug 29, 2024
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
COMPOSITE MATERIAL, METHOD FOR MANUFACTURING COMPOSITE MATERIAL, TE...
Publication number
20240287699
Publication date
Aug 29, 2024
DOWA METALTECH CO., LTD.
Hirotaka KOTANI
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
ALUMINUM-CERAMIC BONDED SUBSTRATE AND METHOD FOR MANUFACTURING THE...
Publication number
20240234240
Publication date
Jul 11, 2024
DOWA METALTECH CO., LTD.
Koji KOBAYASHI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
COPPER ALLOY SHEET MATERIAL AND METHOD FOR PRODUCING THE COPPER ALL...
Publication number
20240200169
Publication date
Jun 20, 2024
DOWA METALTECH CO., LTD.
Ryosuke MIYAHARA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
ALUMINUM-CERAMIC BONDED SUBSTRATE AND METHOD FOR MANUFACTURING THE...
Publication number
20240136249
Publication date
Apr 25, 2024
DOWA METALTECH CO., LTD.
Koji KOBAYASHI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
AG-PLATED MATERIAL, METHOD FOR PRODUCING AG-PLATED MATERIAL, AND EL...
Publication number
20240026558
Publication date
Jan 25, 2024
DOWA METALTECH CO., LTD.
Yosuke Sato
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
AG-COATED MATERIAL, METHOD FOR PRODUCING AG-COATED MATERIAL, AND TE...
Publication number
20240018680
Publication date
Jan 18, 2024
DOWA METALTECH CO., LTD.
Yosuke Sato
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
Cu-Ti-BASED COPPER ALLOY SHEET MATERIAL, METHOD FOR PRODUCING THE S...
Publication number
20230313343
Publication date
Oct 5, 2023
DOWA METALTECH CO., LTD.
Takuya Hashimoto
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
SILVER-PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20230313402
Publication date
Oct 5, 2023
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
INSULATING SUBSTRATE AND MANUFACTURING METHOD THEREOF
Publication number
20230298961
Publication date
Sep 21, 2023
DOWA METALTECH CO., LTD.
Seiya YUKI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Cu-Ni-Al-BASED COPPER ALLOY PLATE MATERIAL, METHOD FOR MANUFACTURIN...
Publication number
20230265543
Publication date
Aug 24, 2023
DOWA METALTECH CO., LTD.
Shuhei KASATANI
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
INSULATING SUBSTRATE AND MANUFACTURING METHOD THEREOF
Publication number
20230268245
Publication date
Aug 24, 2023
DOWA METALTECH CO., LTD.
Seiya YUKI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
COMPOSITE MATERIAL, METHOD FOR PRODUCING COMPOSITE MATERIAL, AND TE...
Publication number
20230175160
Publication date
Jun 8, 2023
DOWA METALTECH CO., LTD.
Yukiya KATO
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
SILVER-PLATED MEMBER, METHOD FOR PRODUCING THE SAME, AND TERMINAL C...
Publication number
20230142395
Publication date
May 11, 2023
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
SILVER-PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20230097787
Publication date
Mar 30, 2023
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
SILVER-PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20230093655
Publication date
Mar 23, 2023
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
BRAZING MATERIAL, METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRO...
Publication number
20230068210
Publication date
Mar 2, 2023
DOWA METALTECH CO., LTD.
Ayumu OZAKI
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
COMPOSITE PLATING MATERIAL AND METHOD FOR PRODUCING THE SAME
Publication number
20230046780
Publication date
Feb 16, 2023
DOWA METALTECH CO., LTD.
Yukiya Kato
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
Cu-Ni-Si-BASED COPPER ALLOY SHEET MATERIAL, METHOD FOR PRODUCING SA...
Publication number
20230018758
Publication date
Jan 19, 2023
DOWA METALTECH CO., LTD.
Wanqing JIANG
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
METAL/CERAMIC BONDING SUBSTRATE AND METHOD FOR PRODUCING SAME
Publication number
20220367316
Publication date
Nov 17, 2022
DOWA METALTECH CO., LTD.
Hideyo Osanai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
COMPOSITE PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20220259753
Publication date
Aug 18, 2022
DOWA METALTECH CO., LTD.
Hirotaka Kotani
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
COPPER ALLOY PLATE AND METHOD FOR PRODUCUING SAME
Publication number
20220162734
Publication date
May 26, 2022
DOWA METALTECH CO., LTD.
Kazuki Yoshida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
PLATED PRODUCT AND METHOD FOR PRODUCING SAME
Publication number
20220136122
Publication date
May 5, 2022
DOWA METALTECH CO., LTD.
Yutaro Hirai
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
MASK FOR PARTIAL PLATING, AND METHOD FOR PRODUCING INSULATED CIRCUI...
Publication number
20220136126
Publication date
May 5, 2022
DOWA METALTECH CO., LTD.
Masaaki Higo
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
HEAT RADIATION MEMBER AND METHOD FOR PRODUCING SAME
Publication number
20220080704
Publication date
Mar 17, 2022
DOWA METALTECH CO., LTD.
Hideyo Osanai
B32 - LAYERED PRODUCTS
Information
Patent Application
METAL/CERAMIC BONDING SUBSTRATE AND METHOD FOR PRODUCING SAME
Publication number
20220032580
Publication date
Feb 3, 2022
DOWA METALTECH CO., LTD.
Hideyo Osanai
B32 - LAYERED PRODUCTS
Information
Patent Application
ALUMINUM/CERAMIC BONDING SUBSTRATE AND METHOD FOR PRODUCING SAME
Publication number
20220033317
Publication date
Feb 3, 2022
DOWA METALTECH CO, LTD.
Koji Kobayashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Cu-Ni-Al BASED COPPER ALLOY SHEET MATERIAL, METHOD FOR PRODUCING SA...
Publication number
20210238724
Publication date
Aug 5, 2021
DOWA METALTECH CO., LTD.
Toshiya SHUTOH
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
COPPER ALLOY PLATE AND METHOD FOR PRODUCING SAME
Publication number
20200407824
Publication date
Dec 31, 2020
DOWA METALTECH CO., LTD.
Naota Higami
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
SEMICONDUCTOR MODULE AND METHOD FOR MANUFACTURING SAME
Publication number
20200388553
Publication date
Dec 10, 2020
FUJI ELECTRIC CO., LTD.
Yuhei NISHIDA
H01 - BASIC ELECTRIC ELEMENTS
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Trademark
last 30 trademarks
Information
Trademark
97454445 - SILC PLATING
Serial number
97454445
Filing date
Jun 12, 2022
DOWA METALTECH CO., LTD.
6 - Common metals and their alloys
Information
Trademark
97418977 - DCNA
Serial number
97418977
Registration number
7477599
Filing date
May 19, 2022
DOWA METALTECH CO., LTD.
6 - Common metals and their alloys