Sagamihara, Japan

Hiroji Sumiyoshi

This inventor holds 6 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1977-1988.


% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 34(Granted Patents)


Location History:

  • Sagamihara, JA (1977)
  • Sagamihara, JP (1982 - 1986)
  • Tokyo, JP (1987 - 1988)
  • Shinagawa, JP (1988)

Company Filing History:


Years Active: 1977-1988

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6 patents (USPTO):Explore Patents

Title: Hiroji Sumiyoshi: Innovator in Cathode-Ray Tube Technology

Introduction

Hiroji Sumiyoshi is a notable inventor based in Sagamihara, Japan. He has made significant contributions to the field of cathode-ray tube technology, holding a total of 6 patents. His innovative approaches have streamlined production processes and improved product reliability.

Latest Patents

One of his latest patents involves the production of a color selection mechanism for cathode-ray tubes. This process eliminates the need for high-temperature heat treatment and complex processing steps, thereby simplifying production. The invention addresses issues related to rejects and dependability that arise from the segregation of components during the stamping operation of conventional methods. The color selection electrode is designed with multiple electron beam-passing openings and is bent within the elastic limit of the material, allowing it to maintain a curved shape without drawing effects. This mechanism is permanently mounted on a frame, enhancing the overall functionality of the cathode-ray tube.

Career Highlights

Hiroji Sumiyoshi has spent a significant part of his career at Sony Corporation, where he has been instrumental in advancing cathode-ray tube technology. His work has not only contributed to the efficiency of production but has also improved the quality of the final products.

Collaborations

Throughout his career, Hiroji has collaborated with esteemed colleagues such as Tomosuke Chiba and Teiji Arae. Their combined expertise has fostered innovation and development in their respective fields.

Conclusion

Hiroji Sumiyoshi's contributions to cathode-ray tube technology exemplify the impact of innovative thinking in engineering. His patents reflect a commitment to improving production processes and product reliability. His work continues to influence the industry and inspire future innovations.

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