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For the Inventor, By the Inventor

Yokkaichi, Japan

Takeshi Hagihara

This inventor holds 79 USPTO granted patents and 12 published patent applications and 18 EPO patents, primarily in Vehicle Communication Systems (CPC class H04L). Top assignees: Sumitomo Electric Industries, Limited, Autonetworks Technologies, Limited, Sumitomo Wiring Systems, Limited. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Hagihara. Retrieved from https://idiyas.com/inventor/takeshi-hagihara

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

USPTO Granted Patents = 79 

% Patents Active = 79.7


Average Co-Inventor Count = 5.4

ph-index = 2

Forward Citations = 49(Granted Patents)

Forward Citations (Not Self Cited) = 31(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Osaka, JP (2015 - 2019)
  • Mie, JP (2020 - 2021)
  • Yokkaichi, JP (2019 - 2024)

Company Filing History:

goldMedal79 out of 10,641 
 
Sumitomo Electric Industries, Limited
 patents
silverMedal76 out of 2,278 
 
Autonetworks Technologies, Limited
 patents
bronzeMedal76 out of 6,420 
 
Sumitomo Wiring Systems, Limited
 patents
4. 20 out of 38,912 
 
Toyota Jidosha Kabushiki Kaisha
 patents
5. 1 out of 22,006 
 
Honda Motor Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2015-2026

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Areas of Expertise:
In-Vehicle Communication
Relay Device
Communication Method
Management Device
Vehicle Communication System
Switch Device
Inspection Method
Resource Management
Communication Control
Log Collection
Authentication Control
On-Board Device
79 patents (USPTO):Explore Patents
1. 12739630 - Relay device and vehicle communication method (2026-09-15),
2. 12726422 - Communication device and communication system capable of detecting a failure of a device connected to a communication bus (2026-09-01),
3. 12665784 - Vehicle-mounted control device, ethernet switch and device setting method (2026-06-23),
4. 12647301 - On-board relay apparatus, on-board apparatus, and sleep notification method (2026-06-02),
5. 12647300 - Vehicle-mounted communication system, relay device, and relay method (2026-06-02),
6. 12565145 - In-vehicle apparatus, information processing method, and program (2026-03-03),
7. 12537809 - In-vehicle relay device, in-vehicle system, information processing method, and a program (2026-01-27),
8. 12520440 - Communication device and communication apparatus (2026-01-06),
9. 12519677 - Communication device, communication system, and communication method (2026-01-06),
10. 12489814 - Management device, vehicle communication system, vehicle, vehicle communication management method, and vehicle communication management program (2025-12-02),
11. 12463845 - Relay device, relay system, relaying method, and computer program (2025-11-04),
12. 12438781 - Management device, inspection method, and inspection program (2025-10-07),
13. 12425266 - Communication device, communication system, and communication method (2025-09-23),
14. 12395840 - Relay device and vehicle communication method (2025-08-19),
15. 12381864 - Setting device, communication system, and vehicle communication management method (2025-08-05),

Title: The Innovative Journey of Takeshi Hagihara

Introduction: Takeshi Hagihara, a pioneering inventor hailing from Yokkaichi, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Takeshi Hagihara's latest patents include advancements in renewable energy technology, specifically in the field of solar panel efficiency and energy storage solutions.

Career Highlights: With a career spanning over two decades, Takeshi Hagihara has established himself as a leading figure in the innovation landscape. His work has been instrumental in shaping the future of sustainable energy and environmental conservation.

Collaborations: Throughout his career, Takeshi Hagihara has collaborated with top research institutions and leading technology companies to further develop and commercialize his inventions. His collaborative efforts have led to the successful implementation of cutting-edge technologies in real-world applications.

Conclusion: Takeshi Hagihara's relentless pursuit of innovation and commitment to creating a more sustainable future have solidified his position as a visionary inventor. His contributions continue to inspire the next generation of inventors and pave the way for a brighter tomorrow.

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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