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For the Inventor, By the Inventor

Niwa-gun, Japan

Okuma Corporation


USPTO Granted Patents = 400


Trademarks = 1

Forward Citations = 2,020

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228 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 (17 out of 17 patents)

5.  Satoshi Eguchi (16 out of 16 patents)

6.  Tomoharu Ando (13 out of 13 patents)

7.  Hiroshi Ueno (12 out of 83 patents)

8.  Atsushi Ieki (12 out of 13 patents)

9.  Takashi Norihisa (11 out of 11 patents)

10.  Takumi Hongo (10 out of 10 patents)

11.  Motozumi Yura (10 out of 10 patents)

12.  Makoto Yoshida (10 out of 10 patents)

13.  Yoichi Kawai (10 out of 10 patents)

14.  Kiyoshi Yoshino (10 out of 10 patents)

15.  Tomohisa Kameyama (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

400 patents:

1. 12463569 - Control device for three-phase alternating current motor (2025-11-04),
2. 12447524 - Mold manufacturing method (2025-10-21),
3. 12438430 - Linear motor with varying width slider teeth (2025-10-07),
4. 12429847 - Feed axis monitoring device and monitoring method for machine tool (2025-09-30),
5. 12427578 - Machining apparatus and cutting method (2025-09-30),
6. 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),
7. 12386336 - Servo control apparatus and servo control method (2025-08-12),
8. 12373968 - Three-dimensional shape measurement system and machine tool system (2025-07-29),
9. 12332626 - Accuracy analysis system for machine tool (2025-06-17),
10. 12323018 - Three-phase induction motor (2025-06-03),
11. 12314030 - Control device for machine tool (2025-05-27),
12. 12267028 - Control apparatus of three-phase AC motor (2025-04-01),
13. 12259714 - Cell controller (2025-03-25),
14. 12231065 - Position control device (2025-02-18),
15. 12081155 - Motor control device and abnormality detection method for current detector provided in motor control device (2024-09-03),
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 - Dec 23 2025

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400 Patents

#1 in Niwa-gun

#422 in Japan

#2,259 in the World

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Niwa-gun, Japan

Okuma Corporation

Forward Citations = 2,020

228 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 (17 out of 17 patents)

5.  Satoshi Eguchi (16 out of 16 patents)

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