Unicharm Corporation, headquartered in Ehime, Japan, specializes in the development and manufacturing of innovative pet care products. The company focuses on enhancing the quality of life for pets and their owners through a range of offerings, including pet diapers, absorbent sheets, and litter boxes. Unicharm is dedicated to advancing technology in pet hygiene and care, ensuring that its products meet the evolving needs of pet owners while promoting animal welfare and comfort.

Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

1,655 Patents

#1 in Ehime

#142 in Japan

#608 in the World

Ehime, Japan

Unicharm Corporation

Forward Citations = 34,637

626 inventors:

Toshifumi Otsubo (98 out of 112 patents)

Satoshi Mizutani (90 out of 90 patents)

Hiroki Yamamoto (85 out of 89 patents)

4. Yuki Noda (78 out of 78 patents)

5. Takayoshi Konishi (70 out of 71 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Unicharm Corporation. Retrieved from https://idiyas.com/company/unicharm

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]

107 patents (CIPO):

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]

906 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]