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Obara Corporation

USPTO Granted Patents = 48

% Expired Patents = 12.5

EPO Patents = 3

Trademarks = 4

Forward Citations = 284

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33 inventors (with patents filed for the assignee):

Shigeru Umeda (11 out of 11 patents)

Toshihiro Nishiwaki (11 out of 12 patents)

Tatsuo Morita (6 out of 73 patents)

4. Yoshio Sato (6 out of 10 patents)

5. Takehiro Izumi (4 out of 4 patents)

6. Teruzo Yamaguchi (4 out of 4 patents)

7. Kenji Hayafuji (3 out of 4 patents)

8. Hiroshi Obara (3 out of 12 patents)

9. Tsuyoshi Takatori (3 out of 3 patents)

10. Katuji Tanabe (3 out of 3 patents)

11. Masaki Kumagai (2 out of 16 patents)

12. Kenta Aoki (2 out of 3 patents)

13. Takashi Kanno (2 out of 2 patents)

14. Daisuke Higuchi (2 out of 2 patents)

15. Yasuhiro Obara (2 out of 2 patents)

Core Competencies:

Welding Robotics

Friction Stir Welding

Resistance Welding

Electrode Tip Management

Welding Control Systems

Welding Transformers

Tool Changers

Spot Joining Techniques

Welding Gun Technology

Cooling Systems for Welders

Data Protection in Welding

Current Sensing in Welding

48 patents: Sort by Forward Citations

1. 12311460 - Replacing and holding device for electrode tip (2025-05-27),

2. 11203081 - Removal device of welding electrode tip (2021-12-21),

3. 9302343 - Process for spot-joining stacked metal foils (2016-04-05),

4. 7654435 - Rotary tool for friction stir spot welding and method of friction stir spot welding using the same (2010-02-02),

5. 7422140 - Friction stir spot joining device (2008-09-09),

6. 7383976 - Friction stir spot joining device (2008-06-10),

7. 7322509 - Friction stir spot joining device (2008-01-29),

8. 7105768 - Fixed type electrode tip take-out device (2006-09-12),

9. 7105767 - Fixed type electrode tip removal device (2006-09-12),

10. 6959228 - Method of protecting data stored in a memory of welding controller (2005-10-25),

11. 6813538 - Welding system (2004-11-02),

12. 6718837 - Driving unit for pressure application shaft in a welding apparatus (2004-04-13),

13. 6603228 - Driving unit of a welding equipment (2003-08-05),

14. 6252193 - X type electric welding machine (2001-06-26),

15. 6223971 - Driving unit of a welding equipment (2001-05-01),

Obara Corporation is a global technology company specializing in the manufacturing of advanced industrial machinery. With over three decades of experience, Obara has established itself as a leading provider of innovative solutions for various industries including automotive, electronics, and renewable energy. Through continuous research and development, Obara aims to enhance manufacturing processes, improve productivity, and exceed customer expectations. Visit our website to learn more about our cutting-edge products and solutions.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

48 Patents

#812 in Tokyo

#1,751 in Japan

#14,509 in the World

Obara Corporation

Forward Citations = 284

33 inventors:

Shigeru Umeda (11 out of 11 patents)

Toshihiro Nishiwaki (11 out of 12 patents)

Tatsuo Morita (6 out of 73 patents)

4. Yoshio Sato (6 out of 10 patents)

5. Takehiro Izumi (4 out of 4 patents)

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