For the Inventor, By the Inventor

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Napra Co., Ltd.

USPTO Granted Patents = 43

EPO Patents = 10

Forward Citations = 146

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7 inventors (with patents filed for the assignee):

Shigenobu Sekine (43 out of 48 patents)

Yurina Sekine (26 out of 26 patents)

Yoshiharu Kuwana (10 out of 10 patents)

4. Ryuji Kimura (3 out of 3 patents)

5. Chihiro Shimaya (2 out of 2 patents)

6. Hiroaki Ikeda (2 out of 126 patents)

7. Kazutoshi Kamibayashi (2 out of 2 patents)

Core Competencies:

Semiconductor Device

Metal Particles

Electronic Device

Wiring Substrate

Integrated Circuit Device

Light-Emitting Diode

Functional Material

Bonding Structure

Spherical Particles

Three-Dimensional Circuit Board

Electroconductive Paste

Insulating Paste

43 patents: Sort by Forward Citations

1. 12113321 - Terminal (2024-10-08),

2. 11534870 - Metal particle (2022-12-27),

3. 11453089 - Bonding structure (2022-09-27),

4. 11364575 - Metal particle (2022-06-21),

5. 10906136 - Joint structure (2021-02-02),

6. 10629506 - Preform for semiconductor encapsulation (2020-04-21),

7. 10507551 - Metal particle and articles formed therefrom (2019-12-17),

8. 10478924 - Metal particle and electroconductive paste formed therefrom (2019-11-19),

9. 10468376 - Semiconductor device and method for manufacturing the same (2019-11-05),

10. 10016848 - Metal particles having intermetallic compound nano-composite structure crystal (2018-07-10),

11. 9950925 - Method for forming functional part in minute space (2018-04-24),

12. 9950496 - Multi-layer preform sheet (2018-04-24),

13. 9924592 - Three-dimensional laminated circuit board, electronic device, information processing system, and information network system (2018-03-20),

14. 9735074 - Semiconductor device (2017-08-15),

15. 9730325 - Substrate with built-in passive element (2017-08-08),

Napra Co., Ltd. is a leading global technology company specializing in software solutions for various industries. With a diverse range of innovative products and services, Napra delivers cutting-edge technology solutions to help businesses streamline their operations and achieve their goals. Our team of talented professionals is dedicated to providing top-notch customer support and ensuring the success of our clients. Visit our website for more information about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

43 Patents

#770 in Tokyo

#1,845 in Japan

#15,577 in the World

Napra Co., Ltd.

Forward Citations = 146

7 inventors:

Shigenobu Sekine (43 out of 48 patents)

Yurina Sekine (26 out of 26 patents)

Yoshiharu Kuwana (10 out of 10 patents)

4. Ryuji Kimura (3 out of 3 patents)

5. Chihiro Shimaya (2 out of 2 patents)

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