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Hioki Denki Kabushiki Kaisha

USPTO Granted Patents = 49

EPO Patents = 4

Trademarks = 1

Forward Citations = 471

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62 inventors (with patents filed for the assignee):

Koichi Yanagisawa (9 out of 11 patents)

Seiji Onuma (6 out of 10 patents)

Akihiro Nagai (5 out of 5 patents)

4. Hideki Tomiyama (5 out of 5 patents)

5. Kouichi Tanaka (4 out of 5 patents)

6. Shin Kasai (3 out of 5 patents)

7. Kazunobu Hayashi (3 out of 4 patents)

8. Hajime Yoda (3 out of 4 patents)

9. Fuchun Zhang (3 out of 3 patents)

10. Kenichi Seki (2 out of 3 patents)

11. Tetsuya Komiyama (2 out of 3 patents)

12. Masao Higuchi (2 out of 2 patents)

13. Fumio Tokutake (2 out of 2 patents)

14. Hideo Watanabe (2 out of 3 patents)

15. Satoshi Imaizumi (2 out of 3 patents)

Core Competencies:

Remote Operation System

Measuring Apparatus

Current Sensor

Voltage Detecting Apparatus

Solar Cell Testing

Clamp Meter

Magnetic Sensor

Resistance Measuring

Electroplating Solution Analysis

Digital Multi-Meter

Insulation Resistance Tester

Phase Detector

49 patents: Sort by Forward Citations

1. 11108867 - Remote operation system and measurement system (2021-08-31),

2. 10928428 - Measuring apparatus (2021-02-23),

3. 10761115 - Sensor and measuring apparatus (2020-09-01),

4. 10714257 - Winding bobbin and winding component (2020-07-14),

5. 10670635 - Current detector and meter (2020-06-02),

6. 10663495 - Averaging unit and measuring apparatus (2020-05-26),

7. D879632 - Clamp sensor (2020-03-31),

8. 10451656 - Current sensor and measuring apparatus (2019-10-22),

9. 10386392 - Hall element driving circuit, sensor circuit, and current measuring apparatus (2019-08-20),

10. 10288649 - Current sensor and measuring apparatus (2019-05-14),

11. 10267829 - Voltage detecting probe and measuring device (2019-04-23),

12. 10168361 - Current sensor and measuring apparatus (2019-01-01),

13. 10041977 - Voltage detecting probe and measuring device (2018-08-07),

14. 10012677 - Voltage detecting apparatus (2018-07-03),

15. 9964518 - Electroplating solution analyzing apparatus (2018-05-08),

HIOKI DENKI KABUSHIKI KAISHA is a Japanese company specializing in the manufacturing and development of electrical measuring instruments. With over 80 years of experience, HIOKI has become a global leader in the industry, offering a wide range of products including digital multimeters, power analyzers, oscilloscopes, and insulation testers. Their innovative solutions are trusted by professionals in various sectors such as automotive, energy, and telecommunications. HIOKI is committed to delivering high-quality and reliable instruments that meet the evolving needs of its customers worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

49 Patents

#20 in Nagano

#1,702 in Japan

#13,874 in the World

Hioki Denki Kabushiki Kaisha

Forward Citations = 471

62 inventors:

Koichi Yanagisawa (9 out of 11 patents)

Seiji Onuma (6 out of 10 patents)

Akihiro Nagai (5 out of 5 patents)

4. Hideki Tomiyama (5 out of 5 patents)

5. Kouichi Tanaka (4 out of 5 patents)

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