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Showa Corporation

USPTO Granted Patents = 438

CIPO Patents = 9

EPO Patents = 90

Trademarks = 21

Forward Citations = 2,270

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303 inventors (with patents filed for the assignee):

Yosuke Murakami (48 out of 64 patents)

Fumiaki Ishikawa (19 out of 20 patents)

Hayato Tsutsui (19 out of 26 patents)

4. Takahiro Kasuga (18 out of 22 patents)

5. Toshio Nishikawa (17 out of 17 patents)

6. Tamotsu Nakamura (17 out of 17 patents)

7. Shunya Senda (13 out of 13 patents)

8. Hiroyuki Miyata (11 out of 14 patents)

9. Yohei Hama (11 out of 11 patents)

10. Kazuhiro Miwa (10 out of 10 patents)

11. Takahiko Saito (10 out of 10 patents)

12. Koichi Hata (10 out of 11 patents)

13. Mitsuo Saito (10 out of 15 patents)

14. Hiroshi Fujita (9 out of 15 patents)

15. Tatsuya Saito (9 out of 9 patents)

Core Competencies:

Hydraulic Damping Device

Shock Absorber

Vehicle Control Device

Suspension Control

Outboard Motor Lifting Device

Vane Pump Device

Damping Force Variable Mechanism

Vehicle Height Adjustment

Electroplating Apparatus

Steering Device

Motor Drive Device

Flow Path Control

438 patents: Sort by Forward Citations

1. 11254353 - Control device and steering device (2022-02-22),

2. 11247685 - Road surface determination device, suspension control device, and suspension device (2022-02-15),

3. 11199238 - Hydraulic damping device (2021-12-14),

4. 11155929 - Masking jig and electroplating apparatus (2021-10-26),

5. 11149815 - Shock absorber (2021-10-19),

6. 11110912 - Vehicle control device, and vehicle (2021-09-07),

7. 11104372 - Vehicle steering device (2021-08-31),

8. 11098780 - Suspension (2021-08-24),

9. 11084371 - Motor drive device (2021-08-10),

10. 11027811 - Outboard motor lifting device (2021-06-08),

11. 10975895 - Piston structure body and lifting device of watercraft propulsion apparatus (2021-04-13),

12. 10974803 - Steering device and watercraft steering device (2021-04-13),

13. 10968975 - Hydraulic damping device (2021-04-06),

14. 10935099 - Outboard engine lifting/lowering device and outboard engine (2021-03-02),

15. 10919597 - Vehicle height adjustment device (2021-02-16),

Showa Corporation is a Japanese electronics company headquartered in Tokyo. The company operates in various industries including automotive parts, industrial machinery, electronics, and energy solutions. With over 100 years of experience, Showa Corporation is known for its innovative products and technological advancements. The company's focus on quality, reliability, and customer satisfaction has earned them a strong reputation in the global market.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

438 Patents

#5 in Saitama 343-0827

#405 in Japan

#2,099 in the World

Showa Corporation

Forward Citations = 2,270

303 inventors:

Yosuke Murakami (48 out of 64 patents)

Fumiaki Ishikawa (19 out of 20 patents)

Hayato Tsutsui (19 out of 26 patents)

4. Takahiro Kasuga (18 out of 22 patents)

5. Toshio Nishikawa (17 out of 17 patents)

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