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Ddi Corp.

USPTO Granted Patents = 26

% Expired Patents = 26.9

Trademarks = 4

Forward Citations = 243

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38 inventors (with patents filed for the assignee):

John Brian Priest (6 out of 20 patents)

Brian Donald Warrick (5 out of 9 patents)

Giovanni Carrea (5 out of 6 patents)

4. Toshinori Suzuki (2 out of 39 patents)

5. Ryan J Fens (2 out of 8 patents)

6. Satoshi Konishi (2 out of 29 patents)

7. Yoshio Takeuchi (2 out of 21 patents)

8. Sei Naito (1 out of 56 patents)

9. Akio Yoneyama (1 out of 23 patents)

10. Akira Yamaguchi (1 out of 56 patents)

11. Shuichi Matsumoto (1 out of 49 patents)

12. Hiroyasu Ishikawa (1 out of 20 patents)

13. Tohru Asami (1 out of 4 patents)

14. Toshikane Oda (1 out of 44 patents)

15. Haruhisa Kato (1 out of 11 patents)

Core Competencies:

Wireless Packet Communication

Mobile Communication

Spread Spectrum

Audio Features

Traffic Data Collection

Gas Purification

Document Filtering

Competitive Buying

26 patents: Sort by Forward Citations

1. 12662833 - System and method for pool equipment protection (2026-06-23),

2. 9347451 - Livestock building design (2016-05-24),

3. 9204628 - Tree stand (2015-12-08),

4. 8991669 - Tree stick and carrier system (2015-03-31),

5. D719680 - Tree stand platform (2014-12-16),

6. 8789653 - Tree stand sound dampener (2014-07-29),

7. D661361 - Bull tire swing (2012-06-05),

8. 7861453 - Decoy and decoy stand (2011-01-04),

9. D623715 - Tractor tire swing (2010-09-14),

10. 7212972 - Audio features description method and audio video features description collection construction method (2007-05-01),

11. 7152063 - Scheme for filtering documents on network using relevant and non-relevant profiles (2006-12-19),

12. 7010592 - Method for collecting statistical traffic data (2006-03-07),

13. 7010585 - DNS server, DHCP server, terminal and communication system (2006-03-07),

14. 7010504 - Competitive buying and selling system and its control method (2006-03-07),

15. 6961316 - Mobile communication system having adaptively assigned packet rate (2005-11-01),

Company Overview

Ddi Corp., based in Tokyo, specializes in the development and manufacturing of advanced electronic components and systems. The company focuses on providing innovative solutions for various industries, including telecommunications, automotive, and consumer electronics. With a commitment to research and development, Ddi Corp. leverages cutting-edge technology to enhance product performance and reliability, positioning itself as a key player in the global electronics market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

26 Patents

#1,164 in Tokyo

#2,508 in Japan

#24,826 in the World

Ddi Corp.

Forward Citations = 243

38 inventors:

John Brian Priest (6 out of 20 patents)

Brian Donald Warrick (5 out of 9 patents)

Giovanni Carrea (5 out of 6 patents)

4. Toshinori Suzuki (2 out of 39 patents)

5. Ryan J Fens (2 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ddi Corp.. Retrieved from https://idiyas.com/company/ddi

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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