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Kddi Corporation

USPTO Granted Patents = 473

% Expired Patents = 43.6

CIPO Patents = 5

EPO Patents = 105

Trademarks = 7

Forward Citations = 1,431

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405 inventors (with patents filed for the assignee):

Kei Kawamura (52 out of 54 patents)

Sei Naito (50 out of 56 patents)

Kyohei Unno (35 out of 36 patents)

4. Takeo Ohseki (31 out of 33 patents)

5. Toshiaki Yamamoto (22 out of 28 patents)

6. Shigeyuki Sakazawa (22 out of 33 patents)

7. Satoshi Konishi (20 out of 29 patents)

8. Yasuhiro Suegara (17 out of 17 patents)

9. Keisuke Takemori (17 out of 18 patents)

10. Atsushi Koike (17 out of 60 patents)

11. Yasuhiro Takishima (17 out of 29 patents)

12. Yoshitaka Kidani (17 out of 17 patents)

13. Toshinori Suzuki (16 out of 39 patents)

14. Ryoichi Kawada (16 out of 23 patents)

15. Hiroki Takeda (14 out of 32 patents)

Core Competencies:

Image Decoding

Point Cloud Processing

Relay Communication

Communication Control

Base Station Apparatus

Terminal Apparatus

Optical Transmission

Wireless Communication

Handover Processing

Multi-Core Optical Fiber

Information Processing

Flight Management

473 patents: Sort by Forward Citations

1. 12744891 - Image decoding device, image decoding method, and program (2026-09-22),

2. 12744890 - Image decoding device, image decoding method, and program (2026-09-22),

3. 12739428 - Image decoding device, image decoding method, and program (2026-09-15),

4. 12726655 - Image decoding device, image decoding method, and program (2026-09-01),

5. 12726654 - Image decoding device, image decoding method, and program (2026-09-01),

6. 12726629 - Image decoding device, image decoding method, and program (2026-09-01),

7. 12720040 - Image decoding device, image decoding method, and program (2026-08-25),

8. 12707345 - Terminal apparatus that efficiently changes connection-target cells, and control method (2026-08-11),

9. 12689769 - Image decoding device, method and program with prediction refinement optical flow (2026-07-21),

10. 12684151 - Mesh decoding device, mesh encoding device, mesh decoding method, and program (2026-07-14),

11. 12684150 - Mesh decoding device, mesh decoding method, and program (2026-07-14),

12. 12676973 - Image decoding device, image decoding method, and program (2026-07-07),

13. 12671809 - Image decoding device, image decoding method, and program (2026-06-30),

14. 12671808 - Image decoding device, image decoding method, and program (2026-06-30),

15. 12657778 - Point cloud decoding device, point cloud decoding method, and program (2026-06-16),

KDDI Corporation, headquartered in Tokyo, Japan, is a prominent player in the telecommunications sector, specializing in advanced image decoding technology. The company focuses on a range of core technological areas, including point cloud processing, relay communication, and communication control. KDDI develops innovative solutions for base station and terminal apparatus, as well as optical and wireless communication systems. Its commitment to research and development positions KDDI at the forefront of enhancing connectivity and communication technologies.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Kddi Corporation

473 Patents

#196 in Tokyo

#394 in Japan

#2,018 in the World

Kddi Corporation

Forward Citations = 1,431

405 inventors:

Kei Kawamura (52 out of 54 patents)

Sei Naito (50 out of 56 patents)

Kyohei Unno (35 out of 36 patents)

4. Takeo Ohseki (31 out of 33 patents)

5. Toshiaki Yamamoto (22 out of 28 patents)

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