Location History:
- Gifu, JP (1984 - 1985)
- Ibaraki, JP (2001)
- Chiba, JP (1996 - 2007)
Company Filing History:
12 out of 677 
5 out of 21 
2 out of 1,037 
Years Active: 1984-2007
Title: Tomio Tsurugi: Innovator in Medicinal Chemistry
Introduction
Tomio Tsurugi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of medicinal chemistry, holding a total of 12 patents. His work focuses on innovative processes for producing important pharmaceutical compounds.
Latest Patents
One of Tsurugi's latest patents is for a process for producing methylcobalamin. This invention provides a novel industrially excellent and ecological method for producing methylcobalamin, which is useful as a medicament. The process involves reducing cyanocobalamin or hydroxocobalamin in the presence of a reducing agent and then methylating the reductant by adding a water-soluble methylating agent. Another significant patent is for donepezil polycrystals and the process for producing the same. This invention presents novel polymorphic crystals with excellent handling properties and an extremely low content of residual solvent. These crystals are used as a precursor for the production of donepezil hydrochloride, which has excellent medicinal action.
Career Highlights
Throughout his career, Tomio Tsurugi has worked with notable companies such as Eisai Company, Limited and Eisai Chemical Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative processes in pharmaceutical production.
Collaborations
Tsurugi has collaborated with esteemed colleagues, including Yoshio Urawa and Ken Furukawa. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.
Conclusion
Tomio Tsurugi is a distinguished inventor whose work in medicinal chemistry has led to significant advancements in pharmaceutical production. His innovative patents continue to impact the field positively.