Location History:
- Mobara, JA (1976)
- Mobara, JP (1990 - 1991)
Company Filing History:
Years Active: 1976-1991
Title: **Fumiaki Yonai: A Pioneer in Cathode-Ray Tube Innovations**
Introduction
Fumiaki Yonai is a prominent inventor based in Mobara, Japan, renowned for his contributions to the field of display technology. He holds three patents, showcasing his innovative spirit and technical expertise, particularly in the development of color cathode-ray tubes.
Latest Patents
Yonai's latest patents reflect his deep understanding of display mechanisms. One notable patent is for a "Color cathode-ray tube having deflection yoke." This invention enhances the adjustment of static convergence and purity by controlling the polarities and magnetization forces of various pole pieces made from metal alloy. His design includes a unique configuration of tap bolts that securely attaches the deflection yoke to the funnel of the cathode-ray tube.
Another significant invention by Yonai is a "Color picture tube of shadow mask type with particular faceplate panel." This patent describes an innovative faceplate panel design with specific curvatures along its axes, aiming to optimize the effective picture area's visual quality. The intricacies of the curvature formulations and conditions are elaborately defined, marking a significant advancement in the field of picture tube technology.
Career Highlights
Fumiaki Yonai's career is primarily associated with Hitachi Ltd., a global leader in electronic systems and devices. His work has played a crucial role in advancing cathode-ray tube technology, positioning him as a key player in the industry.
Collaborations
Throughout his career, Yonai has collaborated with prominent coworkers such as Ryoji Hirai and Eiichi Yamazaki. These partnerships have fostered an environment of innovation and creativity, contributing to the successful development of significant technological advancements in display systems.
Conclusion
Fumiaki Yonai exemplifies the spirit of innovation in the field of technology, particularly through his patents related to color cathode-ray tubes. His contributions not only enhance visual display technologies but also reflect the collaborative efforts in the research and development sector. As technology continues to evolve, Yonai's work remains a foundational aspect of display technology advancements.