Masayuki Tonedachi

Title: Masayuki Tonedachi: Innovator in Pharmaceutical Coating Technology

Introduction

Masayuki Tonedachi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of pharmaceutical technology, particularly in the area of enteric coating for solid dosage forms. His innovative approach addresses critical challenges in the coating process, enhancing the efficacy and safety of pharmaceutical products.

Latest Patents

Tonedachi holds a patent for a method titled "Method for providing enteric coating on solid dosage forms." This invention presents a novel technique that utilizes an aqueous coating liquid, effectively eliminating the issues associated with organic solvent-based coatings. The method involves dispersing a finely divided powder of hydroxypropylmethylcellulose phthalate in an aqueous medium containing triacetin. This results in a stable aqueous coating liquid that can be applied to solid dosage forms through spraying and subsequently dried. Importantly, the preparation and application of the coating liquid must be conducted at temperatures below 25 degrees Celsius to maintain the stability of the dispersion.

Career Highlights

Masayuki Tonedachi is associated with Shin-Etsu Chemical Co., Ltd., where he has contributed to advancements in pharmaceutical formulations. His work has been instrumental in improving the quality and performance of enteric-coated medications, which are crucial for targeted drug delivery.

Collaborations

Tonedachi has collaborated with esteemed colleagues, including Katsuyoshi Minemura and Fujio Sekigawa. Their combined expertise has fostered innovation and development in the pharmaceutical industry.

Conclusion

Masayuki Tonedachi's contributions to enteric coating technology exemplify the importance of innovation in pharmaceuticals. His patented method not only enhances the quality of solid dosage forms but also sets a new standard in the industry.