Location History:
- Sakura, JP (2001 - 2004)
- Oohara, JP (2004)
Company Filing History:
Years Active: 2001-2004
Title: Haruhiko Yoshida: Innovator in Cathode Ray Tube Technology
Introduction
Haruhiko Yoshida is a prominent inventor known for his contributions to the field of cathode ray tube technology. He is based in Sakura, Japan, and has been instrumental in developing innovative solutions that enhance the performance of cathode ray tubes. With a total of 7 patents to his name, Yoshida has made significant strides in this area.
Latest Patents
Yoshida's latest patents include a cathode ray tube that features specific radius of curvatures for the inner and outer surfaces of the panel. This invention describes a color cathode ray tube that consists of a panel portion, which includes a faceplate portion, a skirt portion, a neck portion, and a funnel portion. The faceplate portion is designed to display images on a screen, while the panel portion houses a shadow mask. The neck portion accommodates an electron gun, and the funnel portion connects the panel and neck portions. A critical relationship is established in this patent, where the radius of curvature connecting the center of the screen and the diagonal edge of the screen of the outer surface of the faceplate must be less than the radius of curvature of the inner surface, ensuring optimal performance. Another notable patent describes a color cathode ray tube constituted of a glass bulb, which includes a panel portion with a phosphor screen, a neck portion for the electron gun, and a funnel portion connecting the two. This invention emphasizes the relationship between the thickness of the screen effective area at different sections of the faceplate.
Career Highlights
Yoshida has had a distinguished career at Hitachi, Ltd., where he has contributed to various projects and innovations in display technology. His work has not only advanced the technical capabilities of cathode ray tubes but has also influenced the broader field of electronic displays.
Collaborations
Throughout his career, Yoshida has collaborated with notable colleagues, including Nobuhiko Hosotani and Mitsuru Watanabe. These collaborations have fostered a creative environment that has led to significant advancements in their respective fields.
Conclusion
Haruhiko Yoshida's innovative work in cathode ray tube technology has made a lasting impact on the industry. His patents reflect a deep understanding of the technical challenges and opportunities within display technology. Yoshida continues to be a key figure in advancing
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