This inventor holds 8 USPTO granted patents. Top assignees: Sumitomo Chemical Company, Limited, Sumitomo Pharmaceuticals Company Limited, Taisho Pharmaceutical Co., Ltd.. Active years: 1976-1991.
Location History:
- Nishinomiya, JA (1976)
- Sakai, JA (1976 - 1978)
- Ibaragi, JA (1977 - 1978)
- Sakai, JP (1989 - 1991)
Company Filing History:
7 out of 6,959 
1 out of 174 
1 out of 314 
Years Active: 1976-1991
Title: Noritaka Hamma: Innovator in Fluorine Derivatives of Vitamin D.sub.3
Introduction
Noritaka Hamma is a prominent inventor based in Sakai, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in the development of novel fluorine derivatives of vitamin D.sub.3. With a total of 8 patents to his name, Hamma's work has garnered attention for its potential pharmacological benefits.
Latest Patents
Hamma's latest patents focus on the synthesis of fluorine derivatives of vitamin D.sub.3. These innovative compounds, specifically 26,26,26,27,27,27-hexafluorovitamin D.sub.3, exhibit excellent pharmacological effects. The patents detail a process for producing these derivatives, which involves thermal isomerization of a previtamin D.sub.3 derivative. The resulting compounds are characterized by their unique chemical structures, which include various functional groups that enhance their biological activity.
Career Highlights
Throughout his career, Noritaka Hamma has worked with notable companies such as Sumitomo Chemical Company, Limited and Sumitomo Pharmaceuticals Company Limited. His experience in these organizations has allowed him to refine his expertise in chemical synthesis and pharmaceutical development.
Collaborations
Hamma has collaborated with esteemed colleagues in his field, including Masayoshi Minai and Yoshio Suzuki. These partnerships have contributed to the advancement of his research and the successful development of his patented innovations.
Conclusion
Noritaka Hamma's contributions to the field of vitamin D derivatives highlight his innovative spirit and dedication to pharmaceutical research. His work continues to influence the development of new therapeutic agents, showcasing the importance of innovation in the medical field.