% Expired Patents = 100.0

Forward Citations = 175

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9 inventors (with patents filed for the assignee):

Masatoshi Itoh (4 out of 5 patents)

Makoto Ookuma (4 out of 4 patents)

Shoji Nara (3 out of 3 patents)

4. Wataru Yamamoto (2 out of 2 patents)

5. Shouji Nara (2 out of 2 patents)

6. Chisato Nagamine (1 out of 1 patent)

7. Shigekatsu Maruyama (1 out of 1 patent)

8. Hui Jiang (1 out of 1 patent)

9. Tomoharu Innami (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 7199602 - Inspection method and inspection device for display device and active matrix substrate used for display device (2007-04-03),

2. 7154261 - Tester device, inspection device, and interconnection board receiving unit for the tester device and inspection device (2006-12-26),

3. 6891532 - Apparatus and method for inspecting picture elements of an active matrix type display board (2005-05-10),

4. 6847223 - Method and device for inspection active matrix substrate (2005-01-25),

5. 6815975 - Inspection method and inspection device for active matrix substrate, inspection program used therefor, and information storage medium (2004-11-09),

6. 6633135 - Apparatus and method for evaluating organic EL display (2003-10-14),

Company Overview

Wintest Corporation is a leading provider of software testing solutions. With a team of experienced professionals, we offer a wide range of services including test automation, performance testing, and quality assurance. Our cutting-edge technology and innovative approach ensure that our clients receive high-quality and reliable testing services. Visit our website to learn more about how Wintest can help your business thrive.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#192 in

#5,990 in Japan

JP

Wintest Corporation

Forward Citations = 175

9 inventors:

Masatoshi Itoh (4 out of 5 patents)

Makoto Ookuma (4 out of 4 patents)

Shoji Nara (3 out of 3 patents)

4. Wataru Yamamoto (2 out of 2 patents)

5. Shouji Nara (2 out of 2 patents)

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

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]