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Mitsubishi Metal Corporation

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USPTO Granted Patents = 68

Forward Citations = 946

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155 inventors (with patents filed for the assignee):

Takuo Takeshita (11 out of 33 patents)

Tadashi Sugihara (9 out of 11 patents)

Osamu Tsujimura (6 out of 20 patents)

4. Tatsuo Arai (5 out of 54 patents)

5. Hironori Yoshimura (4 out of 22 patents)

6. Yukihiro Ohuchi (4 out of 4 patents)

7. Niro Odani (4 out of 11 patents)

8. Masayuki Okawa (4 out of 27 patents)

9. Yoshirou Kuromitsu (3 out of 37 patents)

10. Masaaki Nakayama (3 out of 38 patents)

11. Hideaki Yoshida (3 out of 30 patents)

12. Akira Sano (3 out of 38 patents)

13. Kensho Sahira (3 out of 20 patents)

14. Motohiko Yoshizumi (3 out of 13 patents)

15. Takeshi Sakurai (2 out of 15 patents)

Core Competencies:

High Temperature Superconductor

Rare Earth Magnet Powder

N-Type Oxide Superconductor

Superconductive Wiring

Single Crystal Growth

Sputtering Target

Cermet Tool

Nickel Base Alloy

Thin Film Circuit

Thermoelectric Element

Diamond-Coated Tool

Hydrogen Absorbing Alloy

68 patents: Sort by Forward Citations

1. 5468724 - High temperature oxide superconductor (1995-11-21),

2. 5338371 - Rare earth permanent magnet powder, method for producing same and bonded (1994-08-16),

3. 5261767 - Boring bar tool (1993-11-16),

4. 5244871 - N-type oxide superconductor represented by the formula (Nd.sub.x (1993-09-14),

5. 5226404 - Cutting apparatus (1993-07-13),

6. 5209216 - Chain cutter (1993-05-11),

7. 5204059 - Ni base alloy for spark plug electrodes of internal combustion engines (1993-04-20),

8. 5156503 - Boring bar tool (1992-10-20),

9. 5130498 - Ceramic substrate used for fabricating electric or electronic circuit (1992-07-14),

10. 5122206 - Precipitation hardening nickel base single crystal cast alloy (1992-06-16),

11. 5110543 - Cement blade member for cutting-tools and process for producing same (1992-05-05),

12. 5106821 - Process for forming thin oxide film (1992-04-21),

13. 5096768 - Substrate used for fabrication of thick film circuit (1992-03-17),

14. 5087509 - Substrate used for fabrication of thick film circuit (1992-02-11),

15. 5085515 - Method and apparatus for inspecting quality of manufactured articles (1992-02-04),

Company Overview

Mitsubishi Metal Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced superconducting materials. The company focuses on high temperature superconductors, rare earth magnet powders, and N-type oxide superconductors, contributing to innovations in energy and technology sectors. Their expertise extends to superconductive wiring, single crystal growth, sputtering targets, cermet tools, and nickel base alloys, positioning them as a key player in the superconductivity domain and related applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

68 Patents

#682 in Tokyo

#1,432 in Japan

#10,898 in the World

Mitsubishi Metal Corporation

Forward Citations = 946

155 inventors:

Takuo Takeshita (11 out of 33 patents)

Tadashi Sugihara (9 out of 11 patents)

Osamu Tsujimura (6 out of 20 patents)

4. Tatsuo Arai (5 out of 54 patents)

5. Hironori Yoshimura (4 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mitsubishi Metal Corporation. Retrieved from https://idiyas.com/company/mitsubishi-metal

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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