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For the Inventor, By the Inventor

Hoi-gun, Japan

Takayoshi Kawai

This inventor holds 50 USPTO granted patents and 1 published patent application and 3 EPO patents, primarily in Automotive Control Systems (CPC class F01L). Top assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha, Nippondenso Co., Ltd.. Active years: 1986-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takayoshi Kawai. Retrieved from https://idiyas.com/inventor/takayoshi-kawai

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

USPTO Granted Patents = 50 

% Patents Active = 82.0


Average Co-Inventor Count = 4.1

ph-index = 15

Forward Citations = 673(Granted Patents)

Forward Citations (Not Self Cited) = 669(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Toyohashi, JP (1986)
  • Anjo, JP (1987)
  • Hoi, JP (1992)
  • Aichi, JP (1994 - 1995)
  • Hoi-gun, JP (1998 - 2006)
  • Susono, JP (2018 - 2023)

Company Filing History:

goldMedal27 out of 20,407 
 
Denso Corporation
 patents
silverMedal16 out of 38,912 
 
Toyota Jidosha Kabushiki Kaisha
 patents
bronzeMedal8 out of 3,252 
 
Nippondenso Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-2023

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Areas of Expertise:
Hybrid Vehicle
Internal Combustion Engine
Air Conditioning
Control System
Power Generation
Diagnostic Device
Temperature Sensor
Learning Function
Drive Force Control
Vent Control
Noise Reduction
Automotive Technology
50 patents (USPTO):Explore Patents
1. 11712982 - Vehicle including power generation device (2023-08-01),
2. 11458950 - Drive force control system for hybrid vehicle (2022-10-04),
3. 11247661 - Control device and control method for hybrid vehicle (2022-02-15),
4. 10876483 - Control device for internal combustion engine (2020-12-29),
5. 10710446 - Engine starting system for vehicle (2020-07-14),
6. 10639984 - Control system for vehicle (2020-05-05),
7. 10544713 - Control device for internal combustion engine (2020-01-28),
8. 10513950 - Control device for internal combustion engine (2019-12-24),
9. 10502154 - Control device for internal combustion engine (2019-12-10),
10. 10465573 - Internal combustion engine system (2019-11-05),
11. 10344638 - Internal combustion engine system (2019-07-09),
12. 10329962 - Internal combustion engine system (2019-06-25),
13. 10294835 - Internal combustion engine control system (2019-05-21),
14. 10260992 - Abnormality diagnostic device for a variable compression ratio mechanism (2019-04-16),
15. 10030596 - Control device for internal combustion engine (2018-07-24),

Title: Takayoshi Kawai: Innovator in Hybrid Vehicle Technology

Introduction

Takayoshi Kawai, an accomplished inventor hailing from Hoi-gun, Japan, holds an impressive portfolio of 50 patents. His innovations primarily focus on enhancing the efficiency and performance of hybrid vehicles, contributing significantly to the automotive industry.

Latest Patents

Kawai's latest patents demonstrate his commitment to advancing vehicle technology. One notable patent describes a vehicle that includes a power storage device, a rotary electric machine, and a power generation device. This innovative design features a heat radiation unit that efficiently radiates exhaust heat, optimizing power generation based on the vehicle's power requirements. In another recent patent, Kawai developed a drive force control system for hybrid vehicles, designed to reduce overall energy consumption. This system calculates optimal engine output and required electric power, ensuring efficient energy management between the control motor and the battery.

Career Highlights

Throughout his career, Kawai has worked with prestigious companies such as Denso Corporation and Toyota Jidosha Kabushiki Kaisha. His experiences in these organizations have honed his skills and enabled him to push the boundaries of hybrid vehicle technology.

Collaborations

Kawai has collaborated with several prominent figures in the industry, including Yuichi Kajino and Yuji Ito. These partnerships have fostered innovation and contributed to the successful development of Kawai's patented technologies.

Conclusion

Takayoshi Kawai's remarkable contributions to vehicle technology exemplify the spirit of innovation. With a growing number of patents and a solid career within reputable companies, Kawai's work has had a lasting impact on hybrid vehicles and continues to influence the automotive industry. His dedication to enhancing energy efficiency and vehicle performance positions him as a significant figure among contemporary inventors.

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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