Shigeki Iwashita, an esteemed inventor based in Kanagawa, Japan, has made significant contributions to the field of pharmaceuticals, holding a total of nine patents. His work primarily focuses on improving the stability and effectiveness of pharmaceutical compounds, making a notable impact on the industry.

Latest Patents

One of Iwashita's most recent patents is for the **crystalline polymorph of 15B-hydroxy-osaterone acetate**. This invention presents a crystalline polymorphic form A, featuring improved stability, encompassing storage stability, pulverization stability, and enhanced absorption characteristics. The powder X-ray diffraction spectrum displays distinctive diffraction peaks at angles of 9.6°, 17.1°, and 20.2°. This polymorphic form is characterized by a melting point of 280 to 283°C and forms prism crystals.

Another significant patent involves a **crystalline polymorphic form of ulipristal acetate**. This novel crystalline form serves as a promising agent for the prevention and treatment of uterine leiomyoma, as well as acting as a contraceptive. The process for producing this crystalline polymorphic form entails dissolving an isopropanol-solvated crystal of ulipristal acetate in a mixture of ethanol and water, which allows for crystallization without the need for a seed crystal.

Career Highlights

Throughout his career, Shigeki Iwashita has lent his expertise to prominent companies, including Teikoku Hormone Manufacturing Co., Ltd. and Aska Pharmaceutical Co., Ltd. His innovative work has garnered recognition in the pharmaceutical sector, underscoring his commitment to advancing medical science through research and development.

Collaborations

Iwashita has collaborated with notable colleagues such as Naoyuki Koizumi and Shigehiro Takegawa. These collaborations have contributed to the successful development of his patented innovations, showcasing the power of teamwork in the realm of research and invention.

Conclusion

Shigeki Iwashita's contributions to the field of pharmaceuticals through his innovative patents demonstrate his significant role as an inventor. With a focus on enhancing the stability and effectiveness of pharmacological agents, Iwashita continues to push the boundaries of medical science, ensuring that his work has a lasting impact on the industry.

This text is generated by artificial intelligence and may not be accurate.