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Nittetsu Mining Co., Ltd.

USPTO Granted Patents = 43

% Expired Patents = 9.3

CIPO Patents = 3

EPO Patents = 8

Forward Citations = 406

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64 inventors (with patents filed for the assignee):

Takafumi Atarashi (12 out of 21 patents)

Katsuto Nakatsuka (8 out of 17 patents)

Akira Kishimoto (6 out of 8 patents)

4. Takeshi Hazeyama (6 out of 6 patents)

5. Katsuyuki Tanabe (5 out of 5 patents)

6. Yasuie Mikami (5 out of 6 patents)

7. Kohei Mitsuhashi (4 out of 4 patents)

8. Toyohisa Fujita (4 out of 6 patents)

9. Kazuyuki Tohji (3 out of 18 patents)

10. Masanobu Kawata (3 out of 3 patents)

11. Nobuyoshi Iyatomi (3 out of 3 patents)

12. Kenji Yoshino (3 out of 3 patents)

13. Yutaka Yamaguchi (2 out of 23 patents)

14. Akemitsu Iida (2 out of 2 patents)

15. Atsushi Moriya (2 out of 3 patents)

Core Competencies:

Cobalt Ferrite

Lithium Carbonate

Photocatalyst

Hydrogen Sulfide

Filter Element

Magnesium Carbonate

Titania Film

Electrorheological Fluid

Toner

Ceramic Sheet

Froth Flotation

Aluminum Sulfate

43 patents: Sort by Forward Citations

1. 12338134 - Method for producing cobalt ferrite particles and cobalt ferrite particles produced by same (2025-06-24),

2. 10035710 - Method for producing lithium carbonate (2018-07-31),

3. 9255011 - Method for producing lithium carbonate (2016-02-09),

4. 8920763 - Method for producing lithium carbonate (2014-12-30),

5. 8034404 - Method for producing white powder comprising titanium oxide film and metallic silver film (2011-10-11),

6. 7985397 - Method of treating hydrogen sulfide, method of producing hydrogen, and photocatalytic-reaction apparatus (2011-07-26),

7. 7922991 - Basic magnesium carbonate, production method and use of the same (2011-04-12),

8. 7704914 - Photocatalyst and process for producing the same (2010-04-27),

9. 7608557 - Highly active photocatalyst and process for producing the same (2009-10-27),

10. 7566499 - Light interference multi-layered film-coated powder design method, manufacturing method, and light interference multi-layered film-coated powder (2009-07-28),

11. 7399522 - Heat-resistant filter element and method for production thereof (2008-07-15),

12. 7399333 - Filter element and process for producing the same (2008-07-15),

13. 7347979 - Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma (2008-03-25),

14. 7169443 - Powder coated with titania film and method for production thereof (2007-01-30),

15. 7060127 - Silica-calcium carbonate composite particles (2006-06-13),

Company Overview

Nittetsu Mining Co., Ltd. is a Tokyo-based company specializing in the development and production of advanced materials and technologies. The organization focuses on a diverse range of core technology topics, including cobalt ferrite, lithium carbonate, and photocatalysts, which are essential for various industrial applications. Additionally, Nittetsu Mining is engaged in innovative solutions for hydrogen sulfide treatment, magnesium carbonate, and titanium dioxide, alongside research into electrorheological fluids and antibacterial titania, contributing to advancements in environmental and materials science.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

43 Patents

#880 in Tokyo

#1,886 in Japan

#16,025 in the World

Nittetsu Mining Co., Ltd.

Forward Citations = 406

64 inventors:

Takafumi Atarashi (12 out of 21 patents)

Katsuto Nakatsuka (8 out of 17 patents)

Akira Kishimoto (6 out of 8 patents)

4. Takeshi Hazeyama (6 out of 6 patents)

5. Katsuyuki Tanabe (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nittetsu Mining Co., Ltd.. Retrieved from https://idiyas.com/company/nittetsu-mining-company

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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