Katsumasa Hagiwara

This inventor holds 13 USPTO granted patents. Top assignees: Hitachi Automotive Systems, Ltd., Hitachi Astemo Ltd.. Active years: 2013-2026.

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

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

Calculating rank

USPTO Granted Patents = 13

% Patents Active = 84.6

Average Co-Inventor Count = 1.4

ph-index = 3

Forward Citations = 23(Granted Patents)

Company Filing History:

10 out of 2,028

Hitachi Automotive Systems, Ltd.

Years Active: 2013-2026

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12648091 - Electronic control device (2026-06-02),

2. 11377137 - Electric drive device and electric power steering device (2022-07-05),

3. 11312408 - Electronic control device (2022-04-26),

4. 10971976 - Electric drive device and electric power steering device (2021-04-06),

5. 10770812 - Connection terminal assembled body and circuit board using same connection terminal assembled body (2020-09-08),

6. 10759469 - Electric drive device and electric power steering device (2020-09-01),

7. 10435060 - Electronic control device (2019-10-08),

8. 10065672 - Electronic control device (2018-09-04),

9. 9780016 - Lead frame, electronic control device using lead frame, and lead-frame mounting method (2017-10-03),

10. 9701335 - Electronic control device (2017-07-11),

11. 9356494 - Electronic control device (2016-05-31),

12. 8985265 - Electric power steering apparatus (2015-03-24),

13. 8530759 - Electronic apparatus (2013-09-10),

Title: Innovations of Katsumasa Hagiwara

Introduction

Katsumasa Hagiwara is a notable inventor based in Isesaki, Japan. He has made significant contributions to the field of electric drive devices and electronic control units. With a total of 13 patents to his name, Hagiwara's work has had a considerable impact on automotive technology.

Latest Patents

Hagiwara's latest patents include an electric drive device and an electric power steering device. The electric drive device features a motor housing with an annular engagement portion on its outer circumferential surface. This design allows for a secure connection with a metal cover that houses the electronic control unit. The innovative aspect of this device is that it can be fixed without the use of screws, utilizing a sealing region with liquid sealant for enhanced durability. Additionally, his electronic control device consists of a casing and a cover that are bonded together. It includes a drive circuit board for the motor unit and a control circuit board, ensuring efficient operation and power supply.

Career Highlights

Throughout his career, Hagiwara has worked with prominent companies such as Hitachi Automotive Systems, Ltd. and Hitachi Astemo Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in the automotive sector.

Collaborations

Hagiwara has collaborated with talented individuals in his field, including Haruaki Motoda and Hideyuki Hara. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Katsumasa Hagiwara is a distinguished inventor whose work in electric drive devices and electronic control units has made a lasting impact on automotive technology. His innovative designs and collaborations continue to influence the industry.

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]