Kiyonori Takagi

This inventor holds 20 USPTO granted patents and 1 published patent application, plus 1 CIPO patent and 5 EPO patents, primarily in Hybrid Vehicle Technology. Top assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd., Aisin Corporation. Active years: 2015-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyonori Takagi. Retrieved from https://idiyas.com/inventor/kiyonori-takagi

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

USPTO Granted Patents = 20 (Patent Applications = 1)

% Patents Active = 75.0

CIPO Patents = 1

EPO Patents = 5 (Patent Applications = 8)

Average Co-Inventor Count = 4.6

ph-index = 5

Forward Citations = 81(Granted Patents)

Location History:

Toyota, JP (2015)
Okazaki, JP (2016 - 2022)

Company Filing History:

20 out of 38,912

Toyota Jidosha Kabushiki Kaisha

Toyoda Iron Works Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 2015-2022

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Areas of Expertise:

Hybrid Vehicle

Cooling Device

Lubrication System

Power Transmission

Parking Lock Mechanism

Vehicle Drive Device

Duct Assembly

Vehicle Oil Supply

20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11353103 - Control device for vehicle oil supply device (2022-06-07),

2. 11114921 - Vehicle drive device for lubrication a power transmission and cooling a rotating electric machine (2021-09-07),

3. 10994602 - Duct assembly for vehicle (2021-05-04),

4. 10955053 - Manual unlocking device for parking lock mechanism (2021-03-23),

5. 10900410 - Duct assembly for vehicle (2021-01-26),

6. 10828979 - Vehicular cooling device (2020-11-10),

7. 10828978 - Vehicle having cooling device (2020-11-10),

8. 10793206 - Vehicle having cooling device (2020-10-06),

9. 10746282 - Vehicle drive device (2020-08-18),

10. 10670138 - Vehicle drive device (2020-06-02),

11. 10227068 - Hybrid vehicle (2019-03-12),

12. 10214093 - Hybrid vehicle operable in series mode and in series-parallel mode (2019-02-26),

13. 10193414 - Power transmission apparatus for vehicle (2019-01-29),

14. 10173515 - Hybrid vehicle (2019-01-08),

15. 10166955 - Manual release device for parking lock mechanism (2019-01-01),

Title: **Innovations by Kiyonori Takagi: A Leader in Vehicle Control Technologies**

Introduction

Kiyonori Takagi is an accomplished inventor based in Okazaki, Japan, known for his significant contributions to automotive technologies. With a robust portfolio of 20 patents, Takagi has made a profound impact on vehicle oil supply and drive systems. His innovative spirit and expert knowledge in engineering continue to influence the automotive industry.

Latest Patents

Among Takagi's latest patents, two notable inventions stand out. The first patent features a **control device for a vehicle oil supply device**. This device incorporates a mechanical oil pump that can rotate in both forward and reverse directions, along with an electric oil pump that efficiently suctions oil from a common storage area. The innovative controller within this device regulates the rotational speed of the electric oil pump, ensuring optimal performance when the mechanical pump operates in reverse compared to forward rotation.

Another significant patent is the **vehicle drive device for lubricating a power transmission and cooling a rotating electric machine**. This invention includes a carefully designed lubricating path featuring a first oil pump to supply lubricant to the power transmission mechanism, while a separate cooling path, equipped with a second oil pump, supplies oil exclusively to the rotating electric machine for cooling purposes. The cooling path helps enhance the reliability and efficiency of the vehicle drive system.

Career Highlights

Kiyonori Takagi has had an impressive career, contributing to renowned companies such as Toyota Motor Corporation and Aisin Aw Co., Ltd. His experience with these leading automotive firms has played a crucial role in the development of his patented innovations.

Collaborations

Throughout his career, Takagi has collaborated with talented professionals, including coworkers Atsushi Kawamoto and Haruhisa Suzuki. These partnerships have fostered a creative environment that promotes advancements in vehicle technology.

Conclusion

Kiyonori Takagi's dedication to innovation is evident in his numerous patents that enhance vehicle performance and reliability. As a prominent figure in the automotive engineering industry, his work continues to pave the way for future advancements in vehicle oil supply and cooling systems. His contributions are not only a testament to his abilities but also inspire future inventors in the field.

Profile summary based on public USPTO records.