Company Filing History:

18 out of 42,485

Hitachi, Ltd.

patents

1 out of 248

Hitachi Car Engineering Co., Ltd.

4. 1 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1976-2002

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19 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6404086 - Anisotropic magnet brushless motor having a rotor with elastic insulating support structure (2002-06-11),

2. 6032879 - Fuel injector for use in internal combustion engine (2000-03-07),

3. 4413717 - Electromagnetic clutch and method of manufacture (1983-11-08),

4. 4392296 - Method of joining two metal members (1983-07-12),

5. 4377762 - Rotary electric machine rotor and a method of manufacturing the same (1983-03-22),

6. 4376333 - Method of joining members of metal by forced insertion (1983-03-15),

7. 4370793 - Method of coupling two metallic members (1983-02-01),

8. 4339873 - Method of making rotor of rotary machines (1982-07-20),

9. 4335496 - Method of coupling two concentrically disposed members (1982-06-22),

10. 4325678 - Hydraulic pressure producing system for a hydraulic press (1982-04-20),

11. 4306167 - Flywheel magneto rotor and manufacture method thereof (1981-12-15),

12. 4305198 - Method of making an electromagnetic clutch (1981-12-15),

13. 4295553 - Electromagnetic clutch (1981-10-20),

14. 4290295 - Method of making V-grooved pulley assembly (1981-09-22),

15. 4249298 - Method for connecting two members (1981-02-10),

Title: The Innovative Mind of Hideo Tatsumi

Introduction

Hideo Tatsumi, an accomplished inventor based in Mito, Japan, has made significant contributions to the field of motor technology and fuel injection systems. With a remarkable portfolio showcasing 19 patents, his innovative designs highlight the intersection of engineering and creativity.

Latest Patents

Tatsumi's latest patents demonstrate his commitment to advancing technology. One notable invention is the anisotropic magnet brushless motor, which features a rotor supported by an elastic insulating structure. This unique design eliminates the need for a closed magnetic circuit with a traditional inner stator core, optimizing the efficiency of the motor. Another significant patent is for a fuel injector used in internal combustion engines. This design enhances performance by utilizing a magnetic circuit formed by an electromagnetic coil, effectively increasing magnetic attraction efficiency and producing a compact, lightweight injector.

Career Highlights

Throughout his career, Tatsumi has worked with prominent companies, including Hitachi, Ltd. His experience with such reputable organizations has equipped him with the skills and knowledge necessary to develop innovative patents that push the boundaries of technology.

Collaborations

In addition to his technical expertise, Tatsumi has collaborated with notable professionals in the industry, including Hisanobu Kanamaru and Moisei Okabe. These collaborations have contributed to the depth and diversity of his innovative efforts, allowing for a rich exchange of ideas and expertise.

Conclusion

Hideo Tatsumi remains a key figure in the realm of technical innovations. His extensive patent portfolio and collaborative spirit position him as a leader in advancing motor and fuel injection technologies. As he continues to develop new inventions, Tatsumi's work will undoubtedly influence future advancements in the field.

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