Forward Citations = 20

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3 inventors (with patents filed for the assignee):

Sadao Saito (1 out of 1 patent)

Takashi Enomoto (1 out of 1 patent)

Chiharu Watanabe (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 5834879 - Stacked piezoelectric actuator (1998-11-10),

2. 5027619 - Knitting needle driving mechanism of knitting machine (1991-07-02),

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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#1 in Fujimi

#11,139 in Japan

Fujimi, Japan

Wac Data Services Co. Ltd.

Forward Citations = 20

3 inventors:

Sadao Saito (1 out of 1 patent)

Takashi Enomoto (1 out of 1 patent)

Chiharu Watanabe (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Wac Data Services Co. Ltd.. Retrieved from https://idiyas.com/company/wac-data-services-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]