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Espec Corporation

USPTO Granted Patents = 55

EPO Patents = 7

Forward Citations = 755

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55 inventors (with patents filed for the assignee):

Osamu Matsuguma (13 out of 16 patents)

Shinichirou Sakami (7 out of 7 patents)

Tetsuya Shimada (6 out of 6 patents)

4. Yasushi Watanabe (6 out of 6 patents)

5. Katsuhiko Watabe (5 out of 5 patents)

6. Hideki Tanaka (4 out of 7 patents)

7. Hiroshi Okuda (4 out of 11 patents)

8. Kouki Sakane (3 out of 3 patents)

9. Hirotaka Jiten (3 out of 3 patents)

10. Kazuhiro Nakamura (2 out of 6 patents)

11. Junichi Inahara (2 out of 3 patents)

12. Michiya Kusaka (2 out of 2 patents)

13. Seiichi Murakami (2 out of 2 patents)

14. Masayuki Yamauchi (2 out of 2 patents)

15. Kimio Yoshizumi (2 out of 2 patents)

Core Competencies:

Environmental Testing

Humidity Control

Snow Making Apparatus

Stress Test Chamber

Battery State Diagnosis

Fuel Cell Evaluation

Constant Temperature Chamber

Semiconductor Testing

Hygrometer

Temperature-Humidity Chamber

Environmental Test Apparatus

Dew Formation Testing

55 patents: Sort by Forward Citations

1. 12442753 - Environment forming device (2025-10-14),

2. 12331980 - Snow making apparatus and environment forming apparatus (2025-06-17),

3. 12287137 - Snow making apparatus (2025-04-29),

4. 12222278 - Environmental testing device with enhanced electromagnetic effect (2025-02-11),

5. 12159979 - Test jig, test device, and test method for secondary battery (2024-12-03),

6. 11762003 - Environment forming apparatus, program, and method for controlling blower fan (2023-09-19),

7. 10852348 - Contact-type testing device and environmental test method (2020-12-01),

8. D883514 - Stress test chamber (2020-05-05),

9. D882821 - Door for stress test chamber (2020-04-28),

10. 10620113 - Environmental test apparatus (2020-04-14),

11. 10481078 - Hygrometer and temperature-humidity chamber provided with same (2019-11-19),

12. 10012400 - Humidity control apparatus, environment test apparatus, and temperature and humidity control apparatus (2018-07-03),

13. 9885485 - Humidity control apparatus, environment test apparatus, and temperature and humidity control apparatus (2018-02-06),

14. 9778216 - Hygrometer and dew-point instrument (2017-10-03),

15. 9754725 - Method for manufacturing lithium-ion capacitor (2017-09-05),

ESPEC Corporation is a leading global manufacturer of innovative environmental testing equipment. With over 60 years of experience, ESPEC is committed to providing high-quality solutions for temperature, humidity, thermal shock, and other environmental testing needs. Their products are widely used in various industries, including automotive, aerospace, electronics, and more.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

55 Patents

#150 in Osaka

#1,582 in Japan

#12,578 in the World

Espec Corporation

Forward Citations = 755

55 inventors:

Osamu Matsuguma (13 out of 16 patents)

Shinichirou Sakami (7 out of 7 patents)

Tetsuya Shimada (6 out of 6 patents)

4. Yasushi Watanabe (6 out of 6 patents)

5. Katsuhiko Watabe (5 out of 5 patents)

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