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Osaka Transformer Co., Ltd.

USPTO Granted Patents = 8

Trademarks = 2

Forward Citations = 202

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19 inventors (with patents filed for the assignee):

Toshiyuki Okada (3 out of 7 patents)

Hideyuki Yamamoto (2 out of 4 patents)

Hiroji Okada (2 out of 2 patents)

4. Hiromu Yamagami (2 out of 2 patents)

5. Kousuke Shiramizu (2 out of 2 patents)

6. Takafumi Uratani (1 out of 8 patents)

7. Yoshihiro Hamakawa (1 out of 25 patents)

8. Hiroshi Takai (1 out of 4 patents)

9. Hiroaki Okamoto (1 out of 6 patents)

10. Hiroshi Nakayama (1 out of 1 patent)

11. Tomonori Takemoto (1 out of 1 patent)

12. Michiya Kiyohara (1 out of 1 patent)

13. Waichi Nishikawa (1 out of 1 patent)

14. Moritoshi Nagasaka (1 out of 1 patent)

15. Yoshiro Awano (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 4563569 - Gas shielded arc welding torch with consumable electrode wire (1986-01-07),

2. 4496788 - Photovoltaic device (1985-01-29),

3. 4482797 - Electrode biasing welding torch (1984-11-13),

4. 4409465 - Pulse arc welding method and device in which pulse current and (1983-10-11),

5. 4310744 - A.C. Arc welder (1982-01-12),

6. 4125759 - Method and apparatus for shortcircuiting arc welding (1978-11-14),

7. 4101755 - Automatic arc welder (1978-07-18),

8. 3995137 - Alternating current arc welder (1976-11-30),

Osaka Transformer Co., Ltd. is a leading manufacturer and supplier of transformers in the industry. With over 50 years of experience, we specialize in designing and producing high-quality transformers for various applications. Our products are known for their reliability, efficiency, and durability. We strive to provide customized solutions to meet the specific needs of our customers. Visit our website to learn more about our products and services.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 2 2025

8 Patents

#218 in

#4,914 in Japan

Osaka Transformer Co., Ltd.

Forward Citations = 202

19 inventors:

Toshiyuki Okada (3 out of 7 patents)

Hideyuki Yamamoto (2 out of 4 patents)

Hiroji Okada (2 out of 2 patents)

4. Hiromu Yamagami (2 out of 2 patents)

5. Kousuke Shiramizu (2 out of 2 patents)

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