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Sumitomo Metal Mining., Ltd.

USPTO Granted Patents = 30

EPO Patents = 19

Forward Citations = 0

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102 inventors (with patents filed for the assignee):

Takeshi Chonan (6 out of 32 patents)

Hirofumi Tsunematsu (5 out of 28 patents)

Shin-ichi Heguri (4 out of 18 patents)

4. Haruki Kaneda (3 out of 31 patents)

5. Yuki Koshika (3 out of 24 patents)

6. Satoshi Asano (3 out of 33 patents)

7. Tetsutaro Hayashi (2 out of 19 patents)

8. Shin-ya Matsumoto (2 out of 8 patents)

9. Yohei Kudo (2 out of 12 patents)

10. Masatoshi Takano (2 out of 13 patents)

11. Shinsuke Suganuma (2 out of 5 patents)

12. Daisuke Nagao (2 out of 4 patents)

13. Masao Wakabayashi (2 out of 8 patents)

14. Kazuhide Hayashi (2 out of 3 patents)

15. Kenji Adachi (2 out of 2 patents)

Core Competencies:

Lithium Metal Composite Oxide

Positive Electrode Active Material

Infrared Absorbing Particles

Near-Infrared Cured Film

Anti-Counterfeit Ink

Water Purification Device

Metal Composite Hydroxide

Granulated Body Production

Electromagnetic Wave Absorbing Particles

Cobalt Sulfate Production

Nickel Manganese Cobalt Composite Hydroxide

30 patents: Sort by Forward Citations

1. 12747357 - Method of producing organic-inorganic hybrid infrared absorbing particles and organic-inorganic hybrid infrared absorbing particles (2026-09-29),

2. 12742077 - Surface-treated infrared-absorbing fine particles and method for producing the same, infrared-absorbing fine-particle dispersion liquid, and infrared-absorbing fine-particle dispersion body (2026-09-22),

3. 12735584 - Near-infrared curable ink composition, near-infrared cured film, method for producing near-infrared cured product (2026-09-15),

4. 12731786 - Lithium metal composite oxide, positive electrode active substance for lithium secondary battery, positive electrode for lithium secondary battery, lithium secondary battery, and method for producing lithium metal composite oxide (2026-09-08),

5. 12723290 - Method for treating sulfide (2026-09-01),

6. 12723165 - Anti-counterfeit ink composition, anti-counterfeit ink, and anti-counterfeit printed product (2026-09-01),

7. 12686754 - Infrared absorbing particles, infrared absorbing particle dispersion liquid, infrared absorbing particle dispersion material, infrared absorbing laminate transparent substrate, and infrared absorbing transparent substrate (2026-07-21),

8. 12686621 - Method for producing lithium metal composite oxide (2026-07-21),

9. 12679744 - Method for producing lithium metal composite oxide (2026-07-14),

10. D1133096 - Water purification device (2026-07-07),

11. 12676306 - Lithium metal composite oxide, positive electrode active material for lithium secondary batteries, positive electrode and lithium secondary battery (2026-07-07),

12. 12671087 - Lithium metal composite oxide, positive electrode active material for lithium secondary battery, positive electrode for lithium secondary battery, and lithium secondary battery (2026-06-30),

13. 12662393 - Method for producing lithium metal composite oxide (2026-06-23),

14. 12662389 - Method for producing lithium-containing solution (2026-06-23),

15. 12637361 - Production method for cobalt sulfate (2026-05-26),

Company Overview

Sumitomo Metal Mining Co., Ltd. is a prominent Japanese company engaged in the development and production of non-ferrous metals, particularly copper and gold. The organization specializes in mining, smelting, and refining processes, contributing significantly to the global supply chain of these essential materials. Additionally, Sumitomo Metal Mining is involved in advanced technology domains, including materials for electronics and energy solutions, positioning itself as a key player in the sustainable resource management sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

30 Patents

#1,059 in Tokyo

#2,303 in Japan

#21,853 in the World

Sumitomo Metal Mining., Ltd.

Forward Citations = 0

102 inventors:

Takeshi Chonan (6 out of 32 patents)

Hirofumi Tsunematsu (5 out of 28 patents)

Shin-ichi Heguri (4 out of 18 patents)

4. Haruki Kaneda (3 out of 31 patents)

5. Yuki Koshika (3 out of 24 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Metal Mining., Ltd.. Retrieved from https://idiyas.com/company/sumitomo-metal-mining

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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