Katsutaro Ichihara, based in Yokohama, Japan, is a prominent inventor recognized for his significant contributions to the field of optical recording technologies. With a remarkable portfolio of 52 patents, Ichihara continues to influence advancements in the industry through innovative designs and methodologies.

Latest Patents

Among his recent patents, two stand out for their technological advancements. The first patent is for a **phase-change optical recording medium**, which features a unique recording film capable of reversible phase changes between crystalline and amorphous phases upon light irradiation. This invention includes an interface film composed of hafnium (Hf), silicon (Si), oxygen (O), and carbon (C) that enhances the functioning of the recording medium.

The second significant patent focuses on an **optical information recording medium for holographic recording** and the corresponding method. This invention comprises a transparent substrate with a recording layer placed on its first surface. A reflection layer is positioned on the second surface, enabling holograms to be recorded when signal and reference lights interact from the incident side. Notably, the optical density within the recording layer diminishes from the incident side toward the transparent substrate, streamlining holographic information storage.

Career Highlights

Katsutaro Ichihara is currently associated with Toshiba Corporation, where he has been actively involved in cutting-edge research and development of optical storage technologies. His extensive work has not only augmented the company's innovative capabilities but has also positioned Toshiba as a leader in the optical recording medium sector.

Collaborations

Ichihara collaborates closely with esteemed colleagues, including Keiichiro Yusu and Akira Kikitsu. Their combined expertise in engineering and innovation has resulted in groundbreaking advancements in their field and has further enriched the culture of collaboration within Toshiba.

Conclusion

Katsutaro Ichihara's impressive array of patents and his ongoing contributions to the field of optical recording technologies exemplify the spirit of innovation. As he continues to work alongside accomplished professionals, Ichihara is certain to play a crucial role in the evolving landscape of technology, bringing forth new ideas that will shape the future of optical information storage.

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