Company Filing History:

12 out of 42,485

Hitachi, Ltd.

patents

1 out of 5,289

Nippon Telegraph and Telephone Corporation

patents

3 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1985-2002

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6365894 - Electromagnet and magnetic field generating apparatus (2002-04-02),

2. 6236043 - Electromagnet and magnetic field generating apparatus (2001-05-22),

3. 5917293 - Radio-frequency accelerating system and ring type accelerator provided (1999-06-29),

4. 5789875 - Circular accelerator, method of injection of charged particle thereof, (1998-08-04),

5. 5783914 - Particle beam accelerator, and a method of operation (1998-07-21),

6. 5698954 - Automatically operated accelerator using obtained operating patterns (1997-12-16),

7. 5661366 - Ion beam accelerating device having separately excited magnetic cores (1997-08-26),

8. 5600213 - Circular accelerator, method of injection of charged particles thereof, (1997-02-04),

9. 5576602 - Method for extracting charged particle beam and small-sized accelerator (1996-11-19),

10. 5477056 - Circular accelerator, operation method thereof, and semiconductor (1995-12-19),

11. 5436537 - Circular accelerator and a method of injecting beams therein (1995-07-25),

12. 5363008 - Circular accelerator and method and apparatus for extracting (1994-11-08),

13. 5168241 - Acceleration device for charged particles (1992-12-01),

14. 4992745 - Method of synchrotron acceleration and circular accelerator (1991-02-12),

15. 4520343 - Lift control system (1985-05-28),

Title: Innovations of Junichi Hirota

Introduction

Junichi Hirota is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of electromagnet technology, holding a total of 15 patents. His work has been instrumental in advancing the efficiency and effectiveness of magnetic field generating apparatuses.

Latest Patents

One of Hirota's latest patents involves an electromagnet that comprises a pair of magnetic poles, a return yoke, and exciting coils. In the interior portion of a magnetic pole, multiple spacers are arranged side by side in a horizontal direction. Each of these spaces acts as an air layer, with a longitudinal cross-section that is substantially rectangular. The spaces feature a lengthily extending slit shape in a vertical direction. The arrangement of these plural spaces is primarily toward the right side from a beam orbit center, with the interval between adjacent spaces becoming narrower toward the right side. This design allows for a simple magnetic pole structure while securing a wide effective magnetic field area, especially when the maximum magnetic field strength is increased.

Career Highlights

Hirota has worked with Hitachi, Ltd., where he has contributed to various innovative projects. His experience in the industry has allowed him to develop and refine his inventions, making a lasting impact on the field of electromagnet technology.

Collaborations

Some of his notable coworkers include Kazuo Hiramoto and Masatsugu Nishi. Their collaboration has likely contributed to the advancements in the technologies they have worked on together.

Conclusion

Junichi Hirota's contributions to electromagnet technology through his patents and collaborations highlight his importance as an inventor. His innovative designs continue to influence the field and pave the way for future advancements.

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