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Jatco Corporation

USPTO Granted Patents = 1,053

% Expired Patents = 19.4

EPO Patents = 340

Forward Citations = 4,762

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898 inventors (with patents filed for the assignee):

Hiroyasu Tanaka (56 out of 207 patents)

Seiichiro Takahashi (45 out of 47 patents)

Mamiko Inoue (39 out of 40 patents)

4. Naonori Iizuka (37 out of 37 patents)

5. Hideshi Wakayama (36 out of 36 patents)

6. Takuichiro Inoue (31 out of 32 patents)

7. Yoshihisa Kodama (27 out of 30 patents)

8. Ryousuke Nonomura (27 out of 28 patents)

9. Tatsuo Ochiai (25 out of 39 patents)

10. Tomoaki Honma (24 out of 26 patents)

11. Keichi Tatewaki (24 out of 24 patents)

12. Hironori Miyaishi (22 out of 22 patents)

13. Masahiro Hamano (22 out of 22 patents)

14. Tetsuya Izumi (22 out of 22 patents)

15. Yoshinobu Kawamoto (22 out of 31 patents)

Core Competencies:

Power Transmission Device

Vehicle Control Device

Hydraulic Circuit

Control Method

Automatic Transmission

Continuously Variable Transmission

Motor Unit

Oil Pressure Supply

Gear Mechanism

Damping Pressure Supply

Wet-Type Friction Engaging Device

Lubricant Guiding Structure

1,053 patents: Sort by Forward Citations

1. 12736111 - Automatic transmission unit for an electric vehicle (2026-09-15),

2. 12729749 - Transmission unit (2026-09-08),

3. 12723648 - Control device for transmission, method for controlling transmission, and non-transitory computer-readable medium (2026-09-01),

4. 12710092 - Power Transmission Device (2026-08-18),

5. 12704171 - Device having a power transmission mechanism (2026-08-11),

6. 12697984 - Vehicle control device, vehicle control method, and non-transitory computer-readable medium (2026-08-04),

7. 12680605 - Lubricant through hole for transmission (2026-07-14),

8. 12671300 - Device having tunnel portion and catch tank portion (2026-06-30),

9. 12663072 - Power transmission device (2026-06-23),

10. 12663070 - Power transmission device including communication path between first and second chambers (2026-06-23),

11. 12663059 - Unit (2026-06-23),

12. 12640613 - Rotating electric machine (2026-05-26),

13. 12638066 - Unit having a power transmission mechanism therein (2026-05-26),

14. 12631247 - Power transmission device and hydraulic device (2026-05-19),

15. 12630010 - Unit with heat exchanger and housing accommodating differential gear (2026-05-19),

Jatco Corporation, headquartered in Fuji, Japan, specializes in the development and manufacturing of advanced power transmission devices, primarily for the automotive sector. The company focuses on key technologies such as automatic and continuously variable transmissions, hydraulic circuits, and vehicle control devices. Jatco's innovations enhance vehicle performance and efficiency, contributing to the evolution of modern automotive engineering. With a commitment to research and development, Jatco plays a significant role in shaping the future of power transmission solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Jatco Corporation

1,053 Patents

#1 in Fuji

#219 in Japan

#967 in the World

Jatco Corporation

Forward Citations = 4,762

898 inventors:

Hiroyasu Tanaka (56 out of 207 patents)

Seiichiro Takahashi (45 out of 47 patents)

Mamiko Inoue (39 out of 40 patents)

4. Naonori Iizuka (37 out of 37 patents)

5. Hideshi Wakayama (36 out of 36 patents)

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