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Sophia School Corporation

USPTO Granted Patents = 40

% Expired Patents = 12.5

EPO Patents = 10

Forward Citations = 44

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59 inventors (with patents filed for the assignee):

Katsumi Kishino (32 out of 32 patents)

Shunsuke Ishizawa (8 out of 9 patents)

Ichiro Nomura (5 out of 91 patents)

4. Takafumi Noda (5 out of 53 patents)

5. Hiroki Nishioka (4 out of 11 patents)

6. Akihiko Kikuchi (4 out of 10 patents)

7. Tsunenori Asatsuma (4 out of 25 patents)

8. Hitoshi Nakamura (4 out of 59 patents)

9. Sumiko Fujisaki (3 out of 11 patents)

10. Koshi Tamamura (3 out of 21 patents)

11. Takeshi Kikawa (3 out of 9 patents)

12. Hisato Yabuta (2 out of 56 patents)

13. Hiroshi Uchida (2 out of 71 patents)

14. Makoto Kubota (2 out of 153 patents)

15. Takayuki Watanabe (2 out of 56 patents)

Core Competencies:

Light Emitting Apparatus

Projector

Lithium-Ion Battery

Optical Element

Piezoelectric Material

Semiconductor Device

III Nitride Structure

Optical Semiconductor

Laser Diode Device

Columnar Crystal

Plant Cultivation Method

Long-Term Memory Inducing Agent

40 patents: Sort by Forward Citations

1. 12316077 - Light emitting apparatus and projector (2025-05-27),

2. 12308617 - Light emitting device and projector (2025-05-20),

3. 12224556 - Light emitting device, projector, and display (2025-02-11),

4. 12218488 - Light emitting apparatus and projector (2025-02-04),

5. 12211954 - Light emitting apparatus and projector (2025-01-28),

6. 12199408 - Light emitting apparatus and projector (2025-01-14),

7. 12199402 - Light emitting device and projector (2025-01-14),

8. 12113334 - Light emitting device and projector (2024-10-08),

9. 11973318 - Light emitting device and projector (2024-04-30),

10. 11961964 - Method of producing lithium-ion secondary battery, lithium-ion secondary battery, and method of using zwitterionic compound (2024-04-16),

11. 11955582 - Light emitting apparatus and projector (2024-04-09),

12. 11803115 - Light-emitting device and projector (2023-10-31),

13. 11626533 - Light emitting device and projector (2023-04-11),

14. 11588300 - Light emitting device, projector, and display (2023-02-21),

15. 11552216 - Light emitting apparatus and projector (2023-01-10),

Sophia School Corporation, based in Tokyo, specializes in advanced technologies that encompass a range of innovative fields. The company focuses on the development and manufacturing of light-emitting devices, projector technology, and semiconductor laser diodes, contributing to various applications in electronics and display technologies. Additionally, it explores lithium-ion battery advancements, optical elements, and plant cultivation methods, positioning itself at the intersection of technology and sustainable practices. Its expertise in piezoelectric materials and Group-III nitride structures further enhances its portfolio in cutting-edge research and development.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

40 Patents

#932 in

#1,976 in

#17,031 in the World

Sophia School Corporation

Forward Citations = 44

59 inventors:

Katsumi Kishino (32 out of 32 patents)

Shunsuke Ishizawa (8 out of 9 patents)

Ichiro Nomura (5 out of 91 patents)

4. Takafumi Noda (5 out of 53 patents)

5. Hiroki Nishioka (4 out of 11 patents)

Please report any incorrect information to [email protected]

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