Bunkoukeiki Co., Ltd.

Calculating rank

USPTO Granted Patents = 2

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Takayuki Sohtome (2 out of 2 patents)

Chikahiro Miyake (2 out of 2 patents)

Kentaro Ifuku (1 out of 2 patents)

4. Shoko Tsuji (1 out of 1 patent)

5. Yufen Che (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 12517054 - Device for diagnosing environmental stress in plants and method for diagnosing environmental stress (2026-01-06),

2. 12405258 - Diagnosis device for environmental stress in plants and environmental stress diagnosis method (2025-09-02),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#4,375 in Tokyo

#11,147 in Japan

Tokyo, Japan

Bunkoukeiki Co., Ltd.

Forward Citations = 0

5 inventors:

Takayuki Sohtome (2 out of 2 patents)

Chikahiro Miyake (2 out of 2 patents)

Kentaro Ifuku (1 out of 2 patents)

4. Shoko Tsuji (1 out of 1 patent)

5. Yufen Che (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bunkoukeiki Co., Ltd.. Retrieved from https://idiyas.com/company/bunkoukeiki-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]