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Ntt Corporation

USPTO Granted Patents = 574

% Expired Patents = 0.35

EPO Patents = 132

Trademarks = 3

Forward Citations = 164

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865 inventors (with patents filed for the assignee):

Yasushi Takatori (35 out of 35 patents)

Yasuyoshi Kojima (25 out of 30 patents)

Kiyohiko Itokawa (25 out of 32 patents)

4. Daisuke Goto (24 out of 36 patents)

5. Kazumitsu Sakamoto (21 out of 22 patents)

6. Yusuke Asai (18 out of 18 patents)

7. Tomoaki Ogawa (16 out of 31 patents)

8. Motoharu Sasaki (16 out of 18 patents)

9. Masanori Nakamura (16 out of 16 patents)

10. Takatsune Moriyama (15 out of 23 patents)

11. Toshifumi Miyagi (15 out of 25 patents)

12. Yosuke Fujino (15 out of 15 patents)

13. Yasuhiko Inoue (15 out of 15 patents)

14. Yusuke Koshikiya (13 out of 23 patents)

15. Dai Ikarashi (13 out of 80 patents)

Core Competencies:

Wireless Communication

Optical Devices

Data Processing

Interference Control

Estimation Methods

Signal Processing

Detection Devices

Optical Transmission

Remote Control Robots

Model Training

Communication Control

Information Generation

574 patents: Sort by Forward Citations

1. 12757518 - Light receiving device (2026-10-06),

2. 12757203 - Wireless communication system, communication apparatus, communication control apparatus, wireless communication method and communication control method (2026-10-06),

3. 12757098 - Satellite data transmission system (2026-10-06),

4. 12757034 - Judgment method and wireless communication apparatus (2026-10-06),

5. 12756752 - Processing system, and processing method (2026-10-06),

6. 12756647 - Testing device, testing method, and testing program (2026-10-06),

7. 12756584 - Data transmission device on server, data transmission method and program on server (2026-10-06),

8. 12756549 - Secret noise generation system, secret noise generation method and program (2026-10-06),

9. 12756542 - Secure exponent unification system, secure exponent unification apparatus, secure exponent unification method, secure sum computing system, secure sum-of-product computing system, and program (2026-10-06),

10. 12756471 - Optical communication system, optical transmitting and receiving apparatus, and optical communication method (2026-10-06),

11. 12756155 - Tunable light source and control method (2026-10-06),

12. 12755412 - Dimension estimation device, dimension estimation method and dimension estimation program (2026-10-06),

13. 12755191 - Training device to learn data and generate a model calculating an anomaly score, training method, and training program (2026-10-06),

14. 12755058 - Secret multiple repetition calculation apparatus, method and program (2026-10-06),

15. 12755056 - Detection device, detection method, and detection program (2026-10-06),

NTT Corporation, headquartered in Tokyo, Japan, is a leading player in the field of wireless communication systems. The company specializes in developing advanced technologies related to wireless communication, optical devices, and data processing. NTT focuses on critical areas such as interference control, estimation methods, signal processing, and detection devices, contributing to innovations in optical transmission. With a commitment to enhancing connectivity and communication, NTT plays a significant role in shaping the future of telecommunications.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

574 Patents

#171 in Tokyo

#351 in Japan

#1,709 in the World

Ntt Corporation

Forward Citations = 164

865 inventors:

Yasushi Takatori (35 out of 35 patents)

Yasuyoshi Kojima (25 out of 30 patents)

Kiyohiko Itokawa (25 out of 32 patents)

4. Daisuke Goto (24 out of 36 patents)

5. Kazumitsu Sakamoto (21 out of 22 patents)

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