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Kddi Corporation

Calculating rank

USPTO Granted Patents = 478

% Expired Patents = 43.1

CIPO Patents = 5

EPO Patents = 109

Trademarks = 7

Forward Citations = 1,439

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411 inventors (with patents filed for the assignee):

Kei Kawamura (54 out of 55 patents)

Sei Naito (50 out of 56 patents)

Kyohei Unno (36 out of 36 patents)

4. Takeo Ohseki (31 out of 34 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. Yoshitaka Kidani (18 out of 18 patents)

9. Yasuhiro Suegara (17 out of 17 patents)

10. Keisuke Takemori (17 out of 18 patents)

11. Atsushi Koike (17 out of 60 patents)

12. Yasuhiro Takishima (17 out of 29 patents)

13. Toshinori Suzuki (16 out of 39 patents)

14. Hiroki Takeda (16 out of 34 patents)

15. Ryoichi Kawada (16 out of 23 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

478 patents: Sort by Forward Citations

1. 12786967 - Terminal apparatus that executes flexible operational procedure of component carriers, and base station apparatus, control method (2026-11-03),

2. 12786450 - Mesh decoding device, mesh decoding method, and program (2026-11-03),

3. 12771502 - Control device that improves communication efficiency in cell-free massive MIMO system composed of many antennas, control method of the same, processing device, processing method of the same, and computer-readable storage medium (2026-10-20),

4. 12764317 - Image decoding device, image decoding method, and program (2026-10-13),

5. 12763887 - Network node, terminal apparatus, control method, and computer-readable storage medium for enhancing efficiency in communication using carrier waves (2026-10-13),

6. 12744891 - Image decoding device, image decoding method, and program (2026-09-22),

7. 12744890 - Image decoding device, image decoding method, and program (2026-09-22),

8. 12739428 - Image decoding device, image decoding method, and program (2026-09-15),

9. 12726655 - Image decoding device, image decoding method, and program (2026-09-01),

10. 12726654 - Image decoding device, image decoding method, and program (2026-09-01),

11. 12726629 - Image decoding device, image decoding method, and program (2026-09-01),

12. 12720040 - Image decoding device, image decoding method, and program (2026-08-25),

13. 12707345 - Terminal apparatus that efficiently changes connection-target cells, and control method (2026-08-11),

14. 12689769 - Image decoding device, method and program with prediction refinement optical flow (2026-07-21),

15. 12684151 - Mesh decoding device, mesh encoding device, mesh decoding method, and program (2026-07-14),

Company Overview

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 synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

478 Patents

#194 in Tokyo

#391 in Japan

#2,007 in the World

Kddi Corporation

Forward Citations = 1,439

411 inventors:

Kei Kawamura (54 out of 55 patents)

Sei Naito (50 out of 56 patents)

Kyohei Unno (36 out of 36 patents)

4. Takeo Ohseki (31 out of 34 patents)

5. Toshiaki Yamamoto (22 out of 28 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kddi Corporation. Retrieved from https://idiyas.com/company/kddi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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