% Expired Patents = 100.0

EPO Patents = 1

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Atsushi Sumida (1 out of 5 patents)

Takayoshi Osada (1 out of 1 patent)

Osamu Yasuda (1 out of 1 patent)

4. Keishi Tanaka (1 out of 1 patent)

5. Hideaki Korai (1 out of 3 patents)

6. Keishi Tanaka (0 patent)

7. Osamu Yasuda (0 patent)

1 patent: Sort by Forward Citations

#4 in Kakamigahara

#15,745 in Japan

Swood Company Limited

Forward Citations = 0

5 inventors:

Atsushi Sumida (1 out of 5 patents)

Takayoshi Osada (1 out of 1 patent)

Osamu Yasuda (1 out of 1 patent)

4. Keishi Tanaka (1 out of 1 patent)

5. Hideaki Korai (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Swood Company Limited. Retrieved from https://idiyas.com/company/swood-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]

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]