Forward Citations = 405

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3 inventors (with patents filed for the assignee):

Yoshikazu Itoh (5 out of 6 patents)

Fumio Watanabe (4 out of 50 patents)

Shunji Wake (2 out of 2 patents)

5 patents: Sort by Forward Citations

1. 5091877 - Data processing apparatus (1992-02-25),

2. 4905080 - Apparatus for collecting television channel data and market research data (1990-02-27),

3. 4792864 - Apparatus for detecting recorded data in a video tape recorder for (1988-12-20),

4. 4622583 - Audience rating measuring system (1986-11-11),

5. 4574304 - Audience rating measuring system for television and video tape recorder (1986-03-04),

Video Research Ltd. is a leading company in the field of video market research. Established in 1983, we specialize in providing data-driven insights and analysis for businesses looking to understand consumer behavior and trends in the video industry. Our cutting-edge technology and experienced team of researchers ensure accurate and reliable information for our clients.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

5 Patents

#2,719 in Tokyo

#6,649 in Japan

Tokyo, Japan

Video Research Ltd.

Forward Citations = 405

3 inventors:

Yoshikazu Itoh (5 out of 6 patents)

Fumio Watanabe (4 out of 50 patents)

Shunji Wake (2 out of 2 patents)

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