Location History:
- Fujisawa, JP (2004 - 2008)
- Kawasaki, JP (2014 - 2015)
- Kanagawa, JP (2014 - 2019)
Company Filing History:
5 out of 35 
1 out of 44 
1 out of 832,880 Years Active: 2004-2019
Title: The Innovations of Takayoshi Nakagawa
Introduction
Takayoshi Nakagawa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of pharmaceuticals, holding a total of six patents. His work focuses on the development of crystalline forms of various compounds, which have important implications for drug stability and efficacy.
Latest Patents
One of Nakagawa's latest patents is for a crystalline polymorph of 15B-hydroxy-osaterone acetate. This invention provides a crystalline polymorphic form A that exhibits improved stability, including storage stability, pulverization stability, and absorption characteristics. The powder X-ray diffraction spectrum reveals characteristic diffraction peaks at specific angles, indicating the unique properties of this polymorph. Additionally, this crystalline form has a melting point ranging from 280 to 283 degrees Celsius and is characterized as a prism crystal.
Another notable patent involves the crystal of 2-(3,4-dichlorobenzyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-D]pyrimidine-6-carboxylic acid. This invention not only provides the crystal itself but also includes methods for producing such crystals and pharmaceutical compositions that incorporate them. These crystals have potential applications in modulating phosphodiesterase-9 activity and treating disorders like overactive bladder syndrome.
Career Highlights
Throughout his career, Nakagawa has worked with reputable companies in the pharmaceutical industry, including Aska Pharmaceutical Co., Ltd. and Teikoku Hormone Manufacturing Co., Ltd. His experience in these organizations has allowed him to refine his expertise in drug development and innovation.
Collaborations
Some of Nakagawa's notable coworkers include Shigeki Iwashita and Hiroyuki Hayashi. Their collaborative efforts have contributed to the advancement of pharmaceutical research and the development of new therapeutic solutions.
Conclusion
Takayoshi Nakagawa's contributions to the field of pharmaceuticals through his innovative patents highlight his role as a key inventor in the industry. His work continues to influence the development of stable and effective drug formulations.