Kitakyushu, Japan

Jun Hagihara

This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignee: Kabushiki Kaisha Yaskawa Denki. Active years: 2008-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jun Hagihara. Retrieved from https://idiyas.com/inventor/jun-hagihara

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 5 

% Patents Active = 20.0

Average Co-Inventor Count = 1.3

ph-index = 2

Forward Citations = 6(Granted Patents)


Location History:

  • Fukuoka, JP (2008)
  • Fukuoaka, JP (2009)
  • Kitakyushu, JP (2008 - 2014)
  • Kitakyushu, KR (2016)

Company Filing History:


Years Active: 2008-2016

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5 patents (USPTO):Explore Patents

Title: Jun Hagihara: Innovator in Motor Control Technology

Introduction

Jun Hagihara is a prominent inventor based in Kitakyushu, Japan. He has made significant contributions to the field of motor control technology, holding a total of 5 patents. His work focuses on enhancing the efficiency and precision of motor control systems.

Latest Patents

Hagihara's latest patents include innovative designs for motor control apparatuses and methods. One of his notable inventions is a motor control apparatus that features a state quantity detector, which outputs a detection signal corresponding to the state quantity of a motor. This apparatus also includes a vibration detection unit that identifies disturbance vibrations based on a torque instruction and the detection signal. The speed signal generator then creates a speed signal by subtracting the vibration component signal from the detection signal. Finally, a speed controller generates the torque instruction based on the deviation between a speed instruction and the speed signal.

Another significant patent is a motor control apparatus that consists of a power converter, a speed controller, and a stop position controller. The power converter drives the motor based on a torque command, while the speed controller generates this command based on the error between the motor's speed and its speed command. The stop position controller calculates an acceleration command to output a predetermined torque after detecting a reference position, enabling precise position control of the motor.

Career Highlights

Jun Hagihara is associated with Kabushiki Kaisha Yaskawa Denki, a leading company in the field of electrical equipment and automation. His work at Yaskawa Denki has allowed him to develop cutting-edge technologies that enhance motor control systems.

Collaborations

Hagihara has collaborated with notable coworkers, including Seitaro Ohta and Takeshi Arimatsu. Their combined expertise has contributed to the advancement of motor control technologies.

Conclusion

Jun Hagihara's innovative work in motor control technology has led to significant advancements in the field. His patents reflect a commitment to improving the efficiency and precision of motor systems. His contributions continue to influence the industry and inspire future innovations.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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