Mito, Japan

Hideo Tatsumi

This inventor holds 19 USPTO granted patents, primarily in Electromagnetic Devices. Top assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd., Kawamura Co., Ltd.. Active years: 1976-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hideo Tatsumi. Retrieved from https://idiyas.com/inventor/hideo-tatsumi

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 10

Forward Citations = 251(Granted Patents)


Location History:

  • Hitachi, JA (1976)
  • Mito, JA (1977)
  • Ibaraki, JP (1981 - 1983)
  • Sumiyoshi, JP (1983)
  • Mito, JP (1981 - 2002)

Company Filing History:


Years Active: 1976-2002

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Areas of Expertise:
Anisotropic Magnet Brushless Motor
Fuel Injector
Electromagnetic Clutch
Rotary Electric Machine Rotor
Hydraulic Pressure System
Flywheel Magneto Rotor
AC Generator
Circuit Breaker
V-Grooved Pulley Assembly
Metal Joining
Forced Insertion
Coupling Members
19 patents (USPTO):Explore Patents

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.

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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