EPO Patents = 1

Forward Citations = 0

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7 inventors (with patents filed for the assignee):

Yasuaki Koiwa (1 out of 37 patents)

Kazuma Ito (1 out of 8 patents)

Yoshiki Sasaki (1 out of 6 patents)

4. Masaharu Chiba (1 out of 4 patents)

5. Tateishi Yutaka (0 patent)

6. Chiba Masaharu (0 patent)

7. Ito Kazuma (0 patent)

2 patents: Sort by Forward Citations

1. 12734386 - Sprinkler head (2026-09-15),

2. 12629712 - Accessory for sidewall sprinkler head (2026-05-19),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#4,366 in Tokyo

#11,133 in Japan

Tokyo, Japan

Senju Sprinkler Co., Ltd.

Forward Citations = 0

7 inventors:

Yasuaki Koiwa (1 out of 37 patents)

Kazuma Ito (1 out of 8 patents)

Yoshiki Sasaki (1 out of 6 patents)

4. Masaharu Chiba (1 out of 4 patents)

5. Tateishi Yutaka (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Senju Sprinkler Co., Ltd.. Retrieved from https://idiyas.com/company/senju-sprinkler

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]

1 patent (EPO):

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]