% Expired Patents = 100.0

Forward Citations = 110

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4 inventors (with patents filed for the assignee):

Yasuji Ogawa (4 out of 14 patents)

Jun Sakai (1 out of 45 patents)

Kenji Tsunezaki (1 out of 1 patent)

4. Kouki Shimiya (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 8330726 - Position detection apparatus using area image sensor (2012-12-11),

2. 7477243 - Apparatus for controlling the shift of virtual space and method and program for controlling same (2009-01-13),

3. 7414617 - Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereof (2008-08-19),

4. 7202860 - Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereof (2007-04-10),

Company Overview

Eit Co., Ltd. is a leading technology company specializing in innovative solutions for the IT industry. With a focus on cutting-edge research and development, we provide a range of products and services to help businesses streamline their operations and enhance their competitive edge. Our team of experienced professionals is dedicated to delivering high-quality solutions that meet the needs of our clients, ensuring their success in a rapidly evolving market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

4 Patents

#3,053 in Tokyo

#7,573 in Japan

Tokyo, Japan

Eit Co., Ltd.

Forward Citations = 110

4 inventors:

Yasuji Ogawa (4 out of 14 patents)

Jun Sakai (1 out of 45 patents)

Kenji Tsunezaki (1 out of 1 patent)

4. Kouki Shimiya (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Eit Co., Ltd.. Retrieved from https://idiyas.com/company/eit-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]