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Koa Corporation

USPTO Granted Patents = 147

EPO Patents = 5

Trademarks = 9

Forward Citations = 301

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151 inventors (with patents filed for the assignee):

Keishi Nakamura (17 out of 17 patents)

Koichi Hirasawa (12 out of 12 patents)

Tamotsu Endo (10 out of 10 patents)

4. Kenji Kameko (10 out of 10 patents)

5. Tadahiko Yoshioka (9 out of 9 patents)

6. Kentaro Matsumoto (8 out of 8 patents)

7. Takanori Kikuchi (7 out of 12 patents)

8. Yasuyuki Katase (6 out of 6 patents)

9. Shuhei Matsubara (6 out of 6 patents)

10. Yasushi Akahane (6 out of 6 patents)

11. Yoji Gomi (5 out of 6 patents)

12. Koichi Urano (5 out of 5 patents)

13. Satoshi Chiku (5 out of 5 patents)

14. Taro Kimura (5 out of 5 patents)

15. Kenichi Iguchi (4 out of 27 patents)

Core Competencies:

Current Detection Device

Shunt Resistor

Resistive Material

Gas Sensor

Chip Resistor

Electronic Component

Flow Sensor Element

Jumper Element

Sensor Unit

Varistor

Thermal Analysis Device

Resistor Manufacturing Method

147 patents: Sort by Forward Citations

1. 12498260 - Sensor device (2025-12-16),

2. 12493010 - Gas sensor (2025-12-09),

3. 12480975 - Current detection device (2025-11-25),

4. 12477661 - Chip component (2025-11-18),

5. 12454740 - Alloy for resistor and use of resistor alloy in resistor (2025-10-28),

6. 12437904 - Resistance alloy for use in shunt resistor, use of resistance alloy in shunt resistor, and shunt resistor using resistance alloy (2025-10-07),

7. 12435391 - Resistance alloy for use in shunt resistor, use of resistance alloy in shunt resistor, and shunt resistor using resistance alloy (2025-10-07),

8. 12424356 - Resistor (2025-09-23),

9. 12412828 - Electronic component (2025-09-09),

10. 12372553 - Jumper element, shunt resistor apparatus, and method of adjusting characteristic of shunt resistor apparatus for current detection (2025-07-29),

11. 12340925 - Chip resistor and method of producing thereof (2025-06-24),

12. 12332100 - Sensor device (2025-06-17),

13. 12322532 - Shunt resistor and current detection apparatus (2025-06-03),

14. 12306211 - Shunt resistor, method for manufacturing shunt resistor, and current detection device (2025-05-20),

15. 12270716 - Sensor device (2025-04-08),

KOA Corporation is a global manufacturing company specializing in electronic components. With over 70 years of experience, we provide innovative solutions and high-quality products to our customers worldwide. Our extensive product line includes resistors, capacitors, inductors, and sensors. We are committed to delivering superior customer service and maintaining strong relationships with our partners. Visit our website for more information and to explore our offerings.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

147 Patents

#10 in Nagano

#847 in Japan

#5,406 in the World

Koa Corporation

Forward Citations = 301

151 inventors:

Keishi Nakamura (17 out of 17 patents)

Koichi Hirasawa (12 out of 12 patents)

Tamotsu Endo (10 out of 10 patents)

4. Kenji Kameko (10 out of 10 patents)

5. Tadahiko Yoshioka (9 out of 9 patents)

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