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Kdd Corporation

Calculating rank

USPTO Granted Patents = 41

% Expired Patents = 4.9

CIPO Patents = 1

EPO Patents = 4

Trademarks = 1

Forward Citations = 672

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81 inventors (with patents filed for the assignee):

Shu Yamamoto (6 out of 75 patents)

Akio Yoneyama (5 out of 23 patents)

Masaru Sugano (5 out of 16 patents)

4. Yasuyuki Nakajima (5 out of 30 patents)

5. Hiromasa Yanagihara (5 out of 18 patents)

6. Noboru Edagawa (5 out of 59 patents)

7. Shuichi Matsumoto (4 out of 49 patents)

8. Toshinori Suzuki (3 out of 39 patents)

9. Ryoichi Kawada (3 out of 23 patents)

10. Kazuo Hashimoto (3 out of 121 patents)

11. Yoshio Takeuchi (3 out of 21 patents)

12. Toshio Tani (2 out of 10 patents)

13. Fumio Watanabe (2 out of 50 patents)

14. Keiji Tanaka (2 out of 102 patents)

15. Takahiro Hamada (2 out of 18 patents)

Core Competencies:

Video Coding

Compression

Quality Evaluation

Optical Amplifier

Data Transmission

Mobile Communication

Signal Processing

Packet Switching

41 patents: Sort by Forward Citations

1. 7801969 - Apparatus and method for compression-transmitting and decoding picture information and storage medium stored its control programs (2010-09-21),

2. 7380015 - Apparatus and method for compression-transmitting and decoding picture information and storage medium stored its control programs (2008-05-27),

3. 7116715 - Video coding apparatus according to a feature of a video picture (2006-10-03),

4. 6976070 - Method and apparatus for automatic information filtering using URL hierarchical structure and automatic word weight learning (2005-12-13),

5. 6973126 - Video coding apparatus according to a feature of a video picture (2005-12-06),

6. 6970467 - Transfer scheme for speech and voice band signals and ISDN digital signals using reduced transmission bandwidth over ATM (2005-11-29),

7. 6956819 - Method, apparatus and system for evaluating quality-of-service in packet switching network (2005-10-18),

8. 6870859 - Multiplexing system and multiplexing method of tributary signals (2005-03-22),

9. 6867908 - Optical amplifier having various control circuitry (2005-03-15),

10. 6795401 - Band width measuring method and apparatus for a packet switching network (2004-09-21),

11. 6791998 - Polling period controlling apparatus (2004-09-14),

12. 6791951 - Connection establishment method without specifying called terminal, switched network control device and system using this method (2004-09-14),

13. 6772392 - Image failure detection unit in redundant duplex transmission (2004-08-03),

14. 6701373 - Data transmission apparatus (2004-03-02),

15. 6701164 - Mobile communication system with zone-shift control apparatus (2004-03-02),

Company Overview

KDD Corporation, headquartered in Tokyo, Japan, specializes in advanced technologies related to video coding, optical amplification, and data transmission. The company is recognized for its contributions to mobile communication and quality of service, focusing on enhancing signal processing and developing innovative compression techniques. KDD's expertise extends to network interworking, making it a key player in the telecommunications sector, dedicated to improving connectivity and communication efficiency across various platforms.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

41 Patents

#909 in Tokyo

#1,946 in Japan

#16,752 in the World

Kdd Corporation

Forward Citations = 672

81 inventors:

Shu Yamamoto (6 out of 75 patents)

Akio Yoneyama (5 out of 23 patents)

Masaru Sugano (5 out of 16 patents)

4. Yasuyuki Nakajima (5 out of 30 patents)

5. Hiromasa Yanagihara (5 out of 18 patents)

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

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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