Forward Citations = 108

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3 inventors (with patents filed for the assignee):

Tadasi Itagaki (3 out of 3 patents)

Toshikazu Yoshimi (2 out of 16 patents)

Kiyonori Iwama (2 out of 5 patents)

3 patents: Sort by Forward Citations

1. 4170742 - Piezoelectric transducer with multiple electrode areas (1979-10-09),

2. 4045695 - Piezoelectric electro-acoustic transducer (1977-08-30),

3. 4030564 - Loud speaker with stable damping (1977-06-21),

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USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#2 in Tokorozawa

#8,929 in Japan

Tokorozawa, Japan

Tokorozawa Electronic Corporation

Forward Citations = 108

3 inventors:

Tadasi Itagaki (3 out of 3 patents)

Toshikazu Yoshimi (2 out of 16 patents)

Kiyonori Iwama (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokorozawa Electronic Corporation. Retrieved from https://idiyas.com/company/tokorozawa-electronic

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]