Isesaki, Japan

Hiroshi Hagiwara

This inventor holds 4 USPTO granted patents. Top assignees: Mitsuba Corporation, Mitsuba Electric Mfg. Co., Ltd.. Active years: 1989-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Hagiwara. Retrieved from https://idiyas.com/inventor/hiroshi-hagiwara-vuzqqpsm

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 26(Granted Patents)


Company Filing History:


Years Active: 1989-2001

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4 patents (USPTO):Explore Patents

Title: Hiroshi Hagiwara: Innovator in Electric Motor Technology

Introduction

Hiroshi Hagiwara is a notable inventor based in Isesaki, Japan. He has made significant contributions to the field of electric motor technology, holding a total of 4 patents. His innovative designs focus on enhancing the performance and reliability of electric motors, particularly in applications involving piston pumps.

Latest Patents

Hagiwara's latest patents include an "Electric motor for driving a piston pump and method of assembly." This invention discloses an electric motor designed to minimize wobbling of the armature shaft in both axial and radial directions. The assembly method ensures that the outer ring of a yoke bearing is connected to a yoke, while the armature shaft is securely press-fitted to both the yoke bearing inner ring and the first pump housing bearing inner ring. Another significant patent is the "Waterproof electric motor structure," which features a waterproof cover that protects the motor components. This design includes a sealing mechanism that prevents water ingress, ensuring the motor's durability in various environments.

Career Highlights

Hiroshi Hagiwara has worked with prominent companies such as Mitsuba Corporation and Mitsuba Electric Mfg. Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in electric motor technology.

Collaborations

Hagiwara has collaborated with talented individuals in his field, including Masato Iwata and Eiichi Machida. These partnerships have fostered innovation and the development of cutting-edge technologies in electric motors.

Conclusion

Hiroshi Hagiwara's contributions to electric motor technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and a dedication to improving the functionality of electric motors.

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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