Sadayuki Yuhda

Title: **A Closer Look at Inventor Sadayuki Yuhda**

Introduction

Sadayuki Yuhda, an accomplished inventor based in Otawara, Japan, holds an impressive portfolio of seven patents. His work primarily focuses on innovations in dental and medical compositions, contributing significantly to the fields of dentistry and materials science.

Latest Patents

Among his latest patents is a groundbreaking method for setting a dental cement composition. This innovative composition features a practically non-aqueous dental cement that incorporates a polymer or co-polymer with an .alpha.,.beta.-unsaturated carboxylic acid as an essential component. The formula also includes an inorganic powder capable of forming a metal chelate in the presence of water. This remarkable dental composition not only retains the advantages of conventional glass ionomer cement but also offers a higher setting rate and improved physical properties, thus enhancing durability and usability.

Another significant patent involves medical or dental hardening compositions. These compositions consist of calcium phosphate type devitrification glass-ceramics powder with apatite or calcium phosphate ceramics, combined with a liquid component. Additionally, Yuhda designed a second variant comprising strontium phosphate type devitrification glass-ceramics powder, containing strontium-apatite crystals or calcium strontium phosphate ceramics.

Career Highlights

Yuhda has held positions in notable companies such as Sankin Kogyo Kabushiki Kaisha and Onoda Cement Co., Ltd. His work at these companies has provided a solid foundation for his innovative contributions to dental materials.

Collaborations

Throughout his career, Sadayuki Yuhda has collaborated with esteemed professionals, including Masahiko Ueda and Isamu Kato. These partnerships have facilitated the exchange of ideas and strategies, further enriching his inventive projects.

Conclusion

Inventor Sadayuki Yuhda’s contributions to the field of dental and medical compositions highlight the importance of innovation in enhancing the effectiveness and durability of dental materials. His patents reflect a commitment to advancing technology that benefits both practitioners and patients alike.