% Expired Patents = 100.0

Forward Citations = 24

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7 inventors (with patents filed for the assignee):

Toshimi Hirata (1 out of 1 patent)

Ryohei Itatani (1 out of 11 patents)

Mikio Deguchi (1 out of 1 patent)

4. Bencherki Mebarki (1 out of 1 patent)

5. Toshihiko Toda (1 out of 1 patent)

6. Heitaro Ban (1 out of 1 patent)

7. Ryohei Itatani, Legal Representative (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 7422355 - Illumination device (2008-09-09),

2. 7378062 - Object processing apparatus and plasma facility comprising the same (2008-05-27),

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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#19 in Ehime

#11,139 in Japan

Ehime, Japan

Youth Engineering Co., Ltd

Forward Citations = 24

7 inventors:

Toshimi Hirata (1 out of 1 patent)

Ryohei Itatani (1 out of 11 patents)

Mikio Deguchi (1 out of 1 patent)

4. Bencherki Mebarki (1 out of 1 patent)

5. Toshihiko Toda (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Youth Engineering Co., Ltd. Retrieved from https://idiyas.com/company/youth-engineering-company

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]