Duplo Seiko Corporation, headquartered in Kinokawa, Japan, specializes in the development and manufacturing of advanced paper processing technologies. The company focuses on a range of innovative solutions, including paper folding devices, sheet processing apparatus, and bookbinding equipment. With a commitment to enhancing efficiency in the printing and finishing industries, Duplo Seiko also offers products such as adhesive coating devices and stencil printing machines, catering to diverse needs in paper handling and processing.

Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

47 Patents

#1 in Kinokawa

#1,779 in Japan

#14,827 in the World

Kinokawa, Japan

Duplo Seiko Corporation

Forward Citations = 157

44 inventors:

Hideki Oiwa (12 out of 12 patents)

Ryuichi Oota (9 out of 9 patents)

Yoshihide Sugiyama (9 out of 9 patents)

4. Masasuke Funase (7 out of 7 patents)

5. Kazuya Yamamoto (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Duplo Seiko Corporation. Retrieved from https://idiyas.com/company/duplo-seiko

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]

27 patents (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]