Koichi Sumioka

Title: Koichi Sumioka: Innovator in Solar Cell Technology

Introduction

Koichi Sumioka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of solar energy and ink-jet technology. With a total of 4 patents, Sumioka's work has had a lasting impact on these industries.

Latest Patents

Sumioka's latest patents include innovations in dye-sensitized solar cells and ink-jet recording materials. One of his notable inventions is a dye for dye-sensitized solar cells, which is classified as a melocyanine dye. This dye features a structure where an electron donor unit and an electron acceptor unit are connected by conjugated double bonds. This invention boasts excellent photoelectric conversion efficiency and durability. Additionally, it provides a semiconductor electrode sensitized by the dye, along with a dye-sensitized solar cell utilizing this semiconductor electrode. Another significant patent involves an ink-jet recording material that comprises a support and an ink-receptive layer. This material contains compounds such as a carbohydrazide compound and a 4-oxysemicarbazide structure, which enhance the performance of ink-jet recording.

Career Highlights

Throughout his career, Sumioka has worked with Mitsubishi Paper Mills Limited, where he has contributed to various innovative projects. His expertise in materials science and engineering has positioned him as a key figure in the development of advanced technologies.

Collaborations

Sumioka has collaborated with notable professionals in his field, including Kozo Haino and Yukio Tokunaga. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Koichi Sumioka's contributions to solar cell technology and ink-jet materials demonstrate his commitment to innovation. His patents reflect a deep understanding of materials and their applications, making him a valuable asset to the scientific community.