logo

For the Inventor, By the Inventor

Katsuta, Japan

Kunio Hasegawa

This inventor holds 7 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1978-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kunio Hasegawa. Retrieved from https://idiyas.com/inventor/kunio-hasegawa-8j8kun5d

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 5.4

ph-index = 5

Forward Citations = 87(Granted Patents)


Location History:

  • Hitachi, JA (1978)
  • Katsuta, JP (1987 - 1995)

Company Filing History:

goldMedal7 out of 42,743 
 
Hitachi, Ltd.
 patents

Years Active: 1978-1995

Loading Chart...
7 patents (USPTO):Explore Patents
1. 5414356 - Fluxmeter including squid and pickup coil with flux guiding core and (1995-05-09),
2. 5331278 - Apparatus for inspecting degradation/damage of a material using an AC (1994-07-19),
3. 5329099 - Method of maintaining housing of reactor pressure vessel and heat (1994-07-12),
4. 5134368 - Apparatus for magnetically detecting degradation of metal material using (1992-07-28),
5. 5059903 - Method and apparatus utilizing a magnetic field for detecting (1991-10-22),
6. 4687625 - Piping of nuclear reactor containment vessel (1987-08-18),
7. 4085343 - Rotor for a rotary electrical machine having a superconductive field (1978-04-18),

Title: Kunio Hasegawa: Innovator in Magnetic Field Applications

Introduction

Kunio Hasegawa is a prominent inventor based in Katsuta, Japan. He has made significant contributions to the field of magnetic field applications, holding a total of 7 patents. His work focuses on enhancing the sensitivity and resolution of fluxmeters and developing non-destructive inspection apparatuses.

Latest Patents

Hasegawa's latest patents include a fluxmeter that incorporates a squid and a pickup coil with a flux guiding core. This innovative fluxmeter features an application unit for applying a magnetic field, a superconducting quantum interference element, and a flux transmitting circuit. The circuit includes a pickup coil made of a superconducting print coil and a core formed from a soft magnetic material. This core effectively suppresses the leakage of magnetic flux, allowing for efficient magnetic coupling between the pickup coil and the superconducting quantum interference element, thereby improving the fluxmeter's sensitivity and resolution. Additionally, he has developed a non-destructive inspection apparatus that utilizes both DC and AC magnetic fields to detect degradation or damage in materials. This apparatus employs a magnetic field applying device and a magnetic sensor, which includes multiple pickup coils and SQUIDs to determine the form of defects in the inspected objects.

Career Highlights

Hasegawa is currently associated with Hitachi, Ltd., where he continues to innovate in the field of magnetic technologies. His work has been instrumental in advancing the capabilities of magnetic field applications, making significant impacts in various industries.

Collaborations

Throughout his career, Hasegawa has collaborated with notable colleagues, including Masahiro Otaka and Tasuku Shimizu. These collaborations have further enriched his research and development efforts.

Conclusion

Kunio Hasegawa's contributions to the field of magnetic field applications demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving measurement sensitivity and non-destructive testing methods.

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]
Loading…