Kanagawa, Japan

Yoshirou Ishikawa

This inventor holds 3 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1987-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshirou Ishikawa. Retrieved from https://idiyas.com/inventor/yoshirou-ishikawa

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 6(Granted Patents)


Location History:

  • Kanagawa, JP (1987 - 1990)
  • Tokyo, JP (1990)

Company Filing History:


Years Active: 1987-1990

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3 patents (USPTO):Explore Patents

Title: The Innovations of Yoshirou Ishikawa

Introduction

Yoshirou Ishikawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronics, particularly in the development of cathode ray tube technology. With a total of 3 patents to his name, Ishikawa's work has had a lasting impact on the industry.

Latest Patents

One of his latest patents is for a cathode ray tube employing index phosphor elements adhered to a color. This innovation includes an automatic convergence unit that utilizes index elements on the reverse surface of a color-selective electrode. The paste used for forming these index elements consists of index phosphors, an inorganic adhesive, and water, ensuring strong adhesion while facilitating the coating operation.

Another significant patent is the auto convergence circuit, which automatically corrects the convergence of an electron beam in a color cathode ray tube. This electronic circuit detects light reflected from an index pattern on the shadow mask, allowing for precise convergence error information. The integration of the detected signal during multiple traverses of the index pattern enhances the accuracy of convergence correction by reducing noise.

Career Highlights

Yoshirou Ishikawa is currently employed at Sony Corporation, a leading company in the electronics industry. His work at Sony has allowed him to push the boundaries of technology and contribute to advancements in display systems.

Collaborations

Throughout his career, Ishikawa has collaborated with talented individuals such as Kazuyuki Ohta and Shinobu Mitsuhashi. These collaborations have fostered innovation and creativity in their projects.

Conclusion

Yoshirou Ishikawa's contributions to the field of electronics, particularly in cathode ray tube technology, demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving electronic display systems, and his work continues to influence the industry today.

Profile summary based on public USPTO records.
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]
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