Yokohama, Japan

Ryoichi Hirota

This inventor holds 2 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1978-1979.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Hirota. Retrieved from https://idiyas.com/inventor/ryoichi-hirota

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 = 4.8

ph-index = 2

Forward Citations = 21(Granted Patents)


Location History:

  • Yokohama, JA (1978)
  • Yokohama, JP (1979)

Company Filing History:


Years Active: 1978-1979

Loading Chart...
2 patents (USPTO):Explore Patents

Title: Ryoichi Hirota: Innovator in Color Picture Tube Technology

Introduction

Ryoichi Hirota is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of display technology, particularly in the development of color picture tubes. With a total of 2 patents, Hirota's work has had a lasting impact on the industry.

Latest Patents

Hirota's latest patents include innovative designs for color picture tubes and deflection yoke devices. The first patent describes a color picture tube of an in-line type that features a unique method for deflecting electron beams. This design ensures that the central beam experiences greater deflection than the side beams during horizontal deflection, while the side beams are subjected to more deflection during vertical deflection. The invention incorporates vertical and horizontal magnetic pole piece plates to optimize the magnetic fields affecting the electron beams.

The second patent focuses on a deflection yoke device that is ideally suited for use with in-line type color picture tubes. This device is designed to create a specific distribution of magnetic fields, allowing for precise deflection of the central and side electron beams. The result is improved image quality in color television receiver sets.

Career Highlights

Hirota has had a distinguished career at Hitachi, Ltd., where he has been instrumental in advancing display technology. His innovative designs have contributed to the evolution of color television and have set new standards in the industry.

Collaborations

Throughout his career, Hirota has collaborated with talented individuals such as Kunio Ando and Kuniharu Osakabe. These partnerships have fostered a creative environment that has led to groundbreaking advancements in technology.

Conclusion

Ryoichi Hirota's contributions to the field of color picture tubes and deflection yoke devices highlight his role as a key innovator in display technology. His patents reflect a deep understanding of the complexities involved in electron beam deflection, paving the way for future advancements in television technology.

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]
Loading…