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For the Inventor, By the Inventor

Tokyo, Japan

Sumitomo Light Metal Industries, Ltd.


USPTO Granted Patents = 140



Forward Citations = 1,249

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252 inventors (with patents filed for the assignee):

goldMedal Masaki Kumagai (13 out of 16 patents)

silverMedal Yoshio Baba (13 out of 14 patents)

bronzeMedal Shin Tsuchida (12 out of 12 patents)

4.  Yasunaga Itoh (8 out of 22 patents)

5.  Teruo Uno (8 out of 8 patents)

6.  Zenichi Tanabe (8 out of 8 patents)

7.  Masaya Takahashi (7 out of 39 patents)

8.  Naoki Yamashita (7 out of 24 patents)

9.  Hideo Yoshida (7 out of 78 patents)

10.  Toshihiko Fukuda (7 out of 27 patents)

11.  Yuji Hisatomi (7 out of 10 patents)

12.  Yoshiharu Hasegawa (7 out of 12 patents)

13.  Yoshifusa Shoji (7 out of 11 patents)

14.  Yuji Suzuki (6 out of 104 patents)

15.  Koji Nagata (6 out of 14 patents)


Core Competencies:
Aluminum Alloy Heat Exchanger
Refrigerant Tube Production
Anodizing Surface Quality
MIG Welding Process
High-Strength Aluminum Alloy
Friction Stir Welding
Lithographic Printing Plates
Automotive Heat Exchanger
Corrosion Resistance
Extruded Aluminum Products
Brazing Composition
Superplastic Forming

140 patents:

1. 10307813 - Aluminum alloy heat exchanger and method of producing refrigerant tube used for the heat exchanger (2019-06-04),
2. 10301706 - Aluminum alloy sheet that exhibits excellent surface quality after anodizing and method for producing the same (2019-05-28),
3. 9440315 - Aluminum alloy heat exchanger and method of producing refrigerant tube used for the heat exchanger (2016-09-13),
4. 9132518 - Method for producing aluminum alloy heat exchanger (2015-09-15),
5. 9108239 - Sheet material having concave-convex section, and laminated structure and vehicle panel using the same (2015-08-18),
6. 9090288 - Sheet material having a concave-convex part, and vehicle panel and laminated structure using the same (2015-07-28),
7. 9051633 - Aluminum alloy welded member (2015-06-09),
8. 9012033 - Aluminum alloy clad sheet for heat exchangers (2015-04-21),
9. 8828156 - Aluminum sheet material for lithographic printing plates (2014-09-09),
10. 8742294 - MIG welded joint between aluminum and steel members and MIG welding process (2014-06-03),
11. 8714631 - Raised and recessed sheet material, and vehicle panel and laminated structure using the same (2014-05-06),
12. D685194 - Metal sheet material (2013-07-02),
13. D680750 - Metal sheet material (2013-04-30),
14. D680749 - Metal sheet material (2013-04-30),
15. D673779 - Metal sheet material (2013-01-08),
Sumitomo Light Metal Industries, Ltd. is a leading global supplier of aluminum and other high-performance metal products. With over 100 years of expertise, the company is committed to providing innovative solutions to industries such as automotive, aerospace, electronics, and renewable energy. Sumitomo Light Metal Industries delivers high-quality products, excellent customer service, and sustainable manufacturing processes.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

140 Patents

#388 in Tokyo

#873 in Japan

#5,639 in the World

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Tokyo, Japan

Sumitomo Light Metal Industries, Ltd.

Forward Citations = 1,249

252 inventors:

goldMedal Masaki Kumagai (13 out of 16 patents)

silverMedal Yoshio Baba (13 out of 14 patents)

bronzeMedal Shin Tsuchida (12 out of 12 patents)

4.  Yasunaga Itoh (8 out of 22 patents)

5.  Teruo Uno (8 out of 8 patents)

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