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Takahashi, Japan

Sumitomo Electric Sintered Alloy, Ltd.

Calculating rank

USPTO Granted Patents = 103

% Expired Patents = 1.9

EPO Patents = 19

Forward Citations = 174

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79 inventors (with patents filed for the assignee):

Tomoyuki Ueno (32 out of 38 patents)

Tatsuya Saito (22 out of 27 patents)

Kazuo Maeda (14 out of 14 patents)

4. Masato Uozumi (14 out of 14 patents)

5. Tomoyuki Ishimine (10 out of 11 patents)

6. Hijiri Tsuruta (9 out of 9 patents)

7. Asako Watanabe (8 out of 12 patents)

8. Shinichi Hirono (8 out of 8 patents)

9. Kazunari Shimauchi (7 out of 8 patents)

10. Ryota Take (6 out of 6 patents)

11. Naoto Igarashi (6 out of 18 patents)

12. Kazushi Kusawake (5 out of 21 patents)

13. Yasunori Sonoda (5 out of 5 patents)

14. Hirofumi Kiguchi (5 out of 5 patents)

15. Atsushi Sato (5 out of 54 patents)

Core Competencies:

Sintered Gear

Machining System

Electromagnetic Component

Rotary Electric Machine

Core Piece

Powder Magnetic Core

Manufacturing Method

Laser Marking

Joined Component

Throwaway Insert

Iron-Based Sintered Body

Sinter-Brazed Component

103 patents: Sort by Forward Citations

1. 12719317 - Core piece, stator core, stator, rotary electric machine, and method for producing core piece (2026-08-25),

2. 12674453 - Pump assembly (2026-07-07),

3. 12671278 - Stator core, stator, rotary electric machine, and method of manufacturing stator core (2026-06-30),

4. 12576448 - Tool main body and method for producing tool main body (2026-03-17),

5. 12560166 - Pump assembly with the pump disposed within the plurality of teeth of the motor stator (2026-02-24),

6. 12517491 - Machining system, and method of manufacturing a machined product (2026-01-06),

7. 12496635 - Sintered material, sizing device, and method for manufacturing sintered material (2025-12-16),

8. 12492455 - Sintered member, and method for manufacturing sintered member (2025-12-09),

9. 12392382 - Sintered member and electromagnetic coupling (2025-08-19),

10. D1076982 - Cam for a coupling (2025-05-27),

11. 12301055 - Core piece, stator core, stator, and rotary electric machine (2025-05-13),

12. 12237718 - Core, stator, and rotating electric device (2025-02-25),

13. 12226860 - Method for manufacturing sintered gear (2025-02-18),

14. 12202089 - Metal member, processing system, and method for manufacturing metal member (2025-01-21),

15. 12166379 - Core piece, stator core, stator, rotary electric machine, and method for producing core piece (2024-12-10),

Company Overview

Sumitomo Electric Sintered Alloy, Ltd., based in Takahashi, Japan, specializes in the development and manufacturing of advanced sintered components. The company focuses on a range of core technologies, including sintered gears, electromagnetic components, and rotary electric machines. Their expertise extends to innovative manufacturing methods and applications in powder magnetic cores, enhancing performance in various industrial sectors. With a commitment to precision and quality, Sumitomo Electric Sintered Alloy plays a vital role in advancing sintered technology solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

103 Patents

#1 in Takahashi

#1,101 in Japan

#7,592 in the World

Takahashi, Japan

Sumitomo Electric Sintered Alloy, Ltd.

Forward Citations = 174

79 inventors:

Tomoyuki Ueno (32 out of 38 patents)

Tatsuya Saito (22 out of 27 patents)

Kazuo Maeda (14 out of 14 patents)

4. Masato Uozumi (14 out of 14 patents)

5. Tomoyuki Ishimine (10 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Electric Sintered Alloy, Ltd.. Retrieved from https://idiyas.com/company/sumitomo-electric-sintered-alloy

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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