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For the Inventor, By the Inventor

Niwa-gun, Japan

Okuma Corporation


USPTO Granted Patents = 406


Trademarks = 1

Forward Citations = 2,025

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229 inventors (with patents filed for the assignee):

goldMedal Yasukazu Hayashi (27 out of 29 patents)

silverMedal Masayuki Nashiki (25 out of 52 patents)

bronzeMedal Shoichi Morimura (20 out of 20 patents)

4.  Tetsuya Matsushita (18 out of 18 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.  Hiroshi Ueno (12 out of 83 patents)

9.  Atsushi Ieki (12 out of 13 patents)

10.  Makoto Yoshida (11 out of 11 patents)

11.  Takumi Hongo (10 out of 10 patents)

12.  Motozumi Yura (10 out of 10 patents)

13.  Yoichi Kawai (10 out of 10 patents)

14.  Kiyoshi Yoshino (10 out of 10 patents)

15.  Yuji Mizoguchi (9 out of 9 patents)


Core Competencies:
Three-Phase Alternating Current Motor
Linear Motor
Machine Tool
Servo Control Apparatus
Accuracy Diagnostic Device
Data Collection System
Vibration Control Device
Mold Manufacturing Method
Calibration Method
Environmental Temperature Change Prediction
Abnormality Diagnostic Device
Numerical Control Device

406 patents:

1. 12523574 - Machining accuracy diagnosing device and machining accuracy diagnosing method for machine tool (2026-01-13),
2. 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),
3. 12521830 - Machining accuracy diagnosing device and machining accuracy management system for machine tool (2026-01-13),
4. 12518200 - Method for labeling data set of supervised learning machine, supervised learning machine, and state estimation apparatus (2026-01-06),
5. 12517490 - Displacement compensation device and displacement compensation method for machine tool (2026-01-06),
6. 12515287 - Tool magazine apparatus (2026-01-06),
7. 12463569 - Control device for three-phase alternating current motor (2025-11-04),
8. 12447524 - Mold manufacturing method (2025-10-21),
9. 12438430 - Linear motor with varying width slider teeth (2025-10-07),
10. 12429847 - Feed axis monitoring device and monitoring method for machine tool (2025-09-30),
11. 12427578 - Machining apparatus and cutting method (2025-09-30),
12. 12422240 - Calibration method and non-transitory computer-readable storage medium storing calibration program for contact tool sensor in machine tool, and machine tool (2025-09-23),
13. 12386336 - Servo control apparatus and servo control method (2025-08-12),
14. 12373968 - Three-dimensional shape measurement system and machine tool system (2025-07-29),
15. 12332626 - Accuracy analysis system for machine tool (2025-06-17),
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.

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USPTO Data Jan 1 1976 - Jan 13 2026

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406 Patents

#1 in Niwa-gun

#420 in Japan

#2,245 in the World

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Niwa-gun, Japan

Okuma Corporation

Forward Citations = 2,025

229 inventors:

goldMedal Yasukazu Hayashi (27 out of 29 patents)

silverMedal Masayuki Nashiki (25 out of 52 patents)

bronzeMedal Shoichi Morimura (20 out of 20 patents)

4.  Tetsuya Matsushita (18 out of 18 patents)

5.  Satoshi Eguchi (16 out of 16 patents)

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