Hisanobu Tokunaga

Title: Hisanobu Tokunaga: Innovator in Color CRT Technology

Introduction

Hisanobu Tokunaga is a notable inventor based in Tokyo, Japan. He is recognized for his contributions to the field of color cathode ray tube (CRT) technology. His innovative designs have paved the way for advancements in display technology.

Latest Patents

Hisanobu Tokunaga holds a patent for a color CRT device with a deflection yoke. This device features a cathode ray tube that includes a panel with a phosphor surface, which has a diagonal diameter of 45 cm or more and an aspect ratio greater than 4/3. The electron gun in the device is equipped with a high-voltage electrode and a focusing electrode positioned near the high-voltage electrode across a gap. The deflection yoke consists of a core with an approximately annular cross-section, a saddle-type first deflection coil for horizontal deflection, and a toroidal-type second deflection coil for vertical deflection of the electron beam.

Career Highlights

Throughout his career, Hisanobu Tokunaga has worked with prominent companies such as Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Engineering Company, Limited. His experience in these organizations has significantly contributed to his expertise in the field of electronics and display technology.

Collaborations

Hisanobu has collaborated with notable coworkers, including Masumi Yuasa and Makoto Iwagami. Their collective efforts have further advanced the development of innovative technologies in the industry.

Conclusion

Hisanobu Tokunaga's contributions to color CRT technology exemplify his innovative spirit and dedication to advancing display technology. His patent and collaborations reflect his significant impact on the field.