This inventor holds 8 USPTO granted patents and 1 published patent application. Top assignees: Oji Paper Co., Ltd., Oji Holdings Corporation, New Oji Paper Co, Ltd.. Active years: 1994-2022.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Ayako Shirai. Retrieved from https://idiyas.com/inventor/ayako-shirai
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
USPTO Granted Patents = 8 (Patent Applications = 1)
% Patents Active = 62.5
Average Co-Inventor Count = 2.5
ph-index = 2
Forward Citations = 45(Granted Patents)
Location History:
- Yokohama, JP (1994 - 2019)
- Tokyo, JP (2022)
Company Filing History:
5 out of 229 Oji Paper Co., Ltd.
2 out of 131 
Oji Holdings Corporation
1 out of 57 
New Oji Paper Co, Ltd.
Years Active: 1994-2022
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8 patents (USPTO):Explore Patents
Profile summary based on public USPTO records.
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 pending:
IDiyas Innovation Intelligence. (2026). Inventor Profile: Ayako Shirai. Retrieved from https://idiyas.com/inventor/ayako-shirai
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]
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]
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]
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]
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]