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Okuma Corporation

USPTO Granted Patents = 415

% Expired Patents = 20.2

EPO Patents = 4

Trademarks = 1

Forward Citations = 2,073

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233 inventors (with patents filed for the assignee):

Yasukazu Hayashi (27 out of 29 patents)

Masayuki Nashiki (25 out of 52 patents)

Shoichi Morimura (20 out of 20 patents)

4. Tetsuya Matsushita (19 out of 19 patents)

5. Satoshi Eguchi (16 out of 16 patents)

6. Tomoharu Ando (13 out of 13 patents)

7. Takashi Norihisa (13 out of 13 patents)

8. Makoto Yoshida (12 out of 12 patents)

9. Hiroshi Ueno (12 out of 83 patents)

10. Atsushi Ieki (12 out of 13 patents)

11. Motozumi Yura (11 out of 11 patents)

12. Kiyoshi Yoshino (11 out of 11 patents)

13. Takumi Hongo (10 out of 10 patents)

14. Yoichi Kawai (10 out of 10 patents)

15. Yuji Mizoguchi (9 out of 9 patents)

Core Competencies:

Machining Accuracy

Error Compensation

Control Devices

Feed Axis Monitoring

Three-Dimensional Processing

Numerical Control

Abnormality Diagnosis

Thermal Displacement

Cutting Fluid Systems

Servo Control

Data Collection

Motion Error

415 patents: Sort by Forward Citations

1. 12705772 - Three-dimensional shape measuring system (2026-08-11),

2. 12687835 - Servo system (2026-07-21),

3. 12674772 - Thermal displacement estimating method for machine tool and machine tool (2026-07-07),

4. 12661746 - Tool magazine apparatus (2026-06-23),

5. 12607443 - Method for calculating compensation parameter of motion error in machine tool, and machine tool (2026-04-21),

6. 12558752 - Cutting fluid tank for machine tool (2026-02-24),

7. 12547155 - Cell controller (2026-02-10),

8. 12536745 - Three-dimensional point cloud data processing system (2026-01-27),

9. 12523574 - Machining accuracy diagnosing device and machining accuracy diagnosing method for machine tool (2026-01-13),

10. 12523573 - Error identification method for five-axis-control machine tool, non-transitory computer-readable storage medium, and five-axis-control machine tool (2026-01-13),

11. 12521830 - Machining accuracy diagnosing device and machining accuracy management system for machine tool (2026-01-13),

12. 12518200 - Method for labeling data set of supervised learning machine, supervised learning machine, and state estimation apparatus (2026-01-06),

13. 12517490 - Displacement compensation device and displacement compensation method for machine tool (2026-01-06),

14. 12515287 - Tool magazine apparatus (2026-01-06),

15. 12504733 - Tap phase detection method, female thread processing method in machine tool, and machine tool (2025-12-23),

Okuma Corporation is a Japanese machine tool manufacturer based in Nagoya, Japan. It specializes in the design and production of CNC (Computer Numerical Control) machine tools, including lathes, machining centers, grinders, and multitasking machines. With over 100 years of experience, Okuma Corporation is known for its high-quality, reliable, and innovative products that serve various industries worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

Okuma Corporation

415 Patents

#6 in Aichi

#427 in Japan

#2,260 in the World

Okuma Corporation

Forward Citations = 2,073

233 inventors:

Yasukazu Hayashi (27 out of 29 patents)

Masayuki Nashiki (25 out of 52 patents)

Shoichi Morimura (20 out of 20 patents)

4. Tetsuya Matsushita (19 out of 19 patents)

5. Satoshi Eguchi (16 out of 16 patents)

Please report any incorrect information to [email protected]

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