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Aisin-Warner Limited

USPTO Granted Patents = 54

Forward Citations = 525

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52 inventors (with patents filed for the assignee):

Yoichi Hayakawa (16 out of 46 patents)

Seitoku Kubo (15 out of 83 patents)

Yutaka Taga (13 out of 150 patents)

4. Kazuaki Watanabe (12 out of 26 patents)

5. Shiro Sakakibara (11 out of 72 patents)

6. Koji Sumiya (10 out of 40 patents)

7. Kagenori Fukumura (9 out of 59 patents)

8. Yoshiharu Harada (8 out of 30 patents)

9. Masao Kawai (7 out of 31 patents)

10. Seiichi Nishikawa (7 out of 18 patents)

11. Masakatsu Miura (6 out of 30 patents)

12. Tatsuya Iwatsuki (6 out of 10 patents)

13. Takenori Kano (4 out of 27 patents)

14. Koujiro Kuramochi (4 out of 40 patents)

15. Nobuaki Miki (4 out of 57 patents)

Core Competencies:

Transmission Control System

Four-Wheel Drive Vehicle

Hydraulic Servo

Friction Coupling

Power Transmission

Brake Support Mechanism

Lubrication System

Shift Control Device

Lock-Up Clutch

Torque Responsive Clutch

Gear Transmission Mechanism

54 patents: Sort by Forward Citations

1. 4945482 - Transmission control system (1990-07-31),

2. 4911260 - Four-wheel drive vehicle (1990-03-27),

3. 4896739 - Four-wheel drive vehicle (1990-01-30),

4. 4896561 - Lubricating oil supply device for transmission mechanism (1990-01-30),

5. 4890512 - Hydraulic servo for friction coupling element of automatic transmission (1990-01-02),

6. 4854195 - Hydraulic control system for vehicular automatic transmission with two (1989-08-08),

7. 4846022 - Vehicular automatic transmission control system with gear shift inhibitor (1989-07-11),

8. 4846020 - Vehicular automatic transmission control system with gear shift inhibitor (1989-07-11),

9. 4833945 - Vehicular automatic transmission control system (1989-05-30),

10. 4807492 - Mechanism for supporting transmission shafts of automatic transmission (1989-02-28),

11. 4781081 - Hydraulic control for vehicle transmission (1988-11-01),

12. 4763749 - Four-wheel drive vehicle (1988-08-16),

13. 4763748 - Four-wheel drive vehicle (1988-08-16),

14. 4753136 - Hydraulic control of transmission (1988-06-28),

15. 4753132 - Hydraulic servo for friction coupling devices of automatic transmissions (1988-06-28),

Aisin-Warner Limited, headquartered in Anjo, Japan, specializes in the development and manufacturing of advanced automatic transmission technologies. The company focuses on key areas such as transmission control systems, hydraulic servos, and friction couplings, which are essential for enhancing vehicle performance and efficiency. Aisin-Warner is also involved in the innovation of power transmission mechanisms, brake support systems, and lubrication technologies, contributing significantly to the automotive engineering sector and the advancement of four-wheel drive vehicles.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

54 Patents

#7 in Anjo

#1,628 in Japan

#13,109 in the World

Aisin-Warner Limited

Forward Citations = 525

52 inventors:

Yoichi Hayakawa (16 out of 46 patents)

Seitoku Kubo (15 out of 83 patents)

Yutaka Taga (13 out of 150 patents)

4. Kazuaki Watanabe (12 out of 26 patents)

5. Shiro Sakakibara (11 out of 72 patents)

Please report any incorrect information to [email protected]

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