Tokyo, Japan

Takashi Katsuma

This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Katsuma. Retrieved from https://idiyas.com/inventor/takashi-katsuma-7yluqo7j

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 8(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: Takashi Katsuma: Innovator in Electron Gun Technology

Introduction

Takashi Katsuma is a prominent inventor based in Tokyo, Japan. He is known for his significant contributions to the field of electron gun technology, particularly in color ray tubes. His innovative work has led to advancements that enhance the performance and efficiency of electronic displays.

Latest Patents

Katsuma holds a patent for an "Electron gun assembly of color ray tube." This invention involves an electron gun assembly of an in-line type, where electron beams emitted from the cathode pass through first, second, and third grid electrodes. These beams are accelerated and controlled by the electrodes, converging through a fourth grid electrode structure. The focused electron beams are directed onto the phosphor screen by fifth and sixth grid electrodes. The fourth grid electrode structure consists of first to third electrode segments with apertures for the electron beams. The first and third segments maintain a variable potential, adjusted according to the deflection of the electron beams, while the second segment is held at a constant potential.

Career Highlights

Katsuma is associated with Kabushiki Kaisha Toshiba, a leading company in technology and electronics. His work at Toshiba has allowed him to explore and develop innovative solutions in the field of electron gun technology. His contributions have been instrumental in advancing the capabilities of electronic displays.

Collaborations

Throughout his career, Katsuma has collaborated with notable colleagues, including Hideo Mori and Toshio Shimaohgi. These collaborations have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Takashi Katsuma's work in electron gun technology exemplifies the spirit of innovation. His patent for the electron gun assembly has made a significant impact on the field of electronic displays. His contributions continue to influence advancements in technology, showcasing the importance of inventors in shaping the future.

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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