% Expired Patents = 50.0

Forward Citations = 16

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16 inventors (with patents filed for the assignee):

Hajime Nakamura (2 out of 17 patents)

Kei Kawamura (1 out of 54 patents)

Keisuke Takemori (1 out of 18 patents)

4. Hideaki Kawabata (1 out of 14 patents)

5. Atsushi Tagami (1 out of 6 patents)

6. Tsuyoshi Niina (1 out of 1 patent)

7. Sei Naito (1 out of 56 patents)

8. Shinichi Nomoto (1 out of 21 patents)

9. Mori Kurokawa (1 out of 1 patent)

10. Daisuke Kamisaka (1 out of 1 patent)

11. Hiroyuki Yokoyama (1 out of 37 patents)

12. Teruyuki Hasegawa (1 out of 9 patents)

13. Toru Hasegawa (1 out of 31 patents)

14. Kouji Nakao (1 out of 1 patent)

15. Hiroki Furuya (1 out of 2 patents)

6 patents: Sort by Forward Citations

1. 11451771 - Moving-image decoder using intra-prediction, moving-image decoding method using intra-prediction, moving-image encoder using intra-prediction, moving-image encoding method using intra-prediction, and computer readable recording medium (2022-09-20),

2. 10667279 - Information processing device, information processing method, and program (2020-05-26),

3. 10419220 - Management device, key generating device, vehicle, maintenance tool, management system, management method, and computer program (2019-09-17),

4. 9445229 - Estimation of significant places visited by mobile-terminal user based on communications log to base stations (2016-09-13),

5. 7796884 - Wavelength path switching node apparatus and wavelength path allocation method (2010-09-14),

6. 7151751 - Traffic generation apparatus suitable for use in communication experiments (2006-12-19),

Company Overview

Kiddi Corporation is a leading provider of educational toys and products for children. With a focus on combining learning and play, our innovative products are designed to stimulate young minds and foster creativity. From building blocks to interactive games, Kiddi Corporation offers a wide range of products that inspire children to explore, discover, and learn.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#2,469 in Tokyo

#5,990 in Japan

Tokyo, Japan

Kiddi Corporation

Forward Citations = 16

16 inventors:

Hajime Nakamura (2 out of 17 patents)

Kei Kawamura (1 out of 54 patents)

Keisuke Takemori (1 out of 18 patents)

4. Hideaki Kawabata (1 out of 14 patents)

5. Atsushi Tagami (1 out of 6 patents)

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

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]