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Dowa Mining Co., Ltd.

USPTO Granted Patents = 217

CIPO Patents = 3

Trademarks = 2

Forward Citations = 1,822

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330 inventors (with patents filed for the assignee):

Hideyo Osanai (18 out of 35 patents)

Masami Kimura (16 out of 24 patents)

Akira Sugawara (13 out of 84 patents)

4. Kazushi Sano (12 out of 12 patents)

5. Masami Sakuraba (12 out of 12 patents)

6. Seiichi Hisano (11 out of 11 patents)

7. Makoto Namioka (10 out of 11 patents)

8. Kishio Tayama (9 out of 9 patents)

9. Junji Nakamura (8 out of 23 patents)

10. Nobuyoshi Tsukaguchi (8 out of 8 patents)

11. Shuji Yoshizawa (8 out of 26 patents)

12. Akira Nagatomi (7 out of 38 patents)

13. Takayuki Takahashi (7 out of 24 patents)

14. Kazuhisa Saito (7 out of 10 patents)

15. Kazuyuki Matsumoto (6 out of 45 patents)

Core Competencies:

Silver Powder

Indium Oxide Powder

Battery Positive Electrode Material

Sintered Rare Earth Magnetic Alloy

Aluminum/Ceramic Bonding Substrate

Oxide Superconductor

Phosphor Mixture

Copper Base Alloy

Metal/Ceramic Bonding

Iron Nitride Magnetic Powder

Conductive Filler

Electronic Part Mounting Substrate

217 patents: Sort by Forward Citations

1. 8992701 - Silver powder and method for producing same (2015-03-31),

2. 8282702 - Silver powder and method for producing same (2012-10-09),

3. 7820138 - Indium oxide powder and method for producing same (2010-10-26),

4. 7722728 - Heat treatment method and heat treatment apparatus (2010-05-25),

5. 7651785 - Tin-plated product (2010-01-26),

6. 7641817 - Silver powder and method for producing same (2010-01-05),

7. 7585588 - Battery positive electrode material (2009-09-08),

8. 7575643 - Carburization treatment method (2009-08-18),

9. 7514022 - Composite plated product and method for producing same (2009-04-07),

10. 7481698 - Sintered rare earth magnetic alloy wafer surface grinding machine (2009-01-27),

11. 7462301 - Silver powder (2008-12-09),

12. 7445672 - Method of forming group-III nitride crystal, layered structure and epitaxial substrate (2008-11-04),

13. 7394024 - Oxide superconductor current lead and method of manufacturing the same, and superconducting system (2008-07-01),

14. 7393596 - Aluminum/ceramic bonding substrate and method for producing same (2008-07-01),

15. 7393473 - Method for producing a composite plated product (2008-07-01),

Dowa Mining Co., Ltd. is a Japanese company engaged in the mining and smelting of non-ferrous metals. With a history spanning over 130 years, Dowa Mining has established itself as a leading global player in the industry. The company operates mines and processing facilities in various countries, including Japan, Peru, and Australia. Dowa Mining extracts and refines metals such as zinc, copper, lead, and precious metals. Their mining operations adhere to strict environmental regulations, showcasing their commitment to sustainability. Dowa Mining's expertise lies in exploring and developing high-grade mineral deposits, utilizing advanced technologies to maximize resource recovery, and delivering high-quality products to their global customer base.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

217 Patents

#288 in Tokyo

#648 in Japan

#3,807 in the World

Dowa Mining Co., Ltd.

Forward Citations = 1,822

330 inventors:

Hideyo Osanai (18 out of 35 patents)

Masami Kimura (16 out of 24 patents)

Akira Sugawara (13 out of 84 patents)

4. Kazushi Sano (12 out of 12 patents)

5. Masami Sakuraba (12 out of 12 patents)

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