Company Filing History:
2 out of 6,896 
1 out of 55 Years Active: 2002-2008
Title: Innovations of Junichi Nishikawa: Pioneering Processes for Dihalogenopurines
Introduction
Junichi Nishikawa, a notable inventor based in Osaka, Japan, has made significant contributions to the field of chemistry. With three patents to his name, Nishikawa has demonstrated a commitment to innovation, particularly in the production of essential chemical compounds.
Latest Patents
Nishikawa's recent patents focus on the efficient preparation of 2,6-dihalogenopurine. His methods highlight a process that utilizes inexpensive starting materials, ensuring cost-effectiveness in production. The first patent describes a method for preparing 2,6-dihalogenopurine by treating 2-amino-6-halogenopurine, which has a protective group at either the 7 or 9 position, with a diazotizing agent and a halogen source. The second patent involves a process for creating 9-acyl-2-amino-6-halogenopurine by treating 2-amino-6-halogenopurine with an acylating agent in the presence of a base. These innovations are poised to facilitate advancements in pharmaceutical development and synthetic chemistry.
Career Highlights
Throughout his career, Junichi Nishikawa has been associated with prominent companies, including Sumitomo Chemical Company, Limited, and Sumika Fine Chemicals Co., Ltd. His professional journey highlights his dedication to advancing chemical processes and products.
Collaborations
Nishikawa has collaborated with notable professionals in his field, including Taketo Hayashi and Hiroharu Kumazawa. These partnerships reflect a collaborative spirit in research and development, contributing to a rich environment for innovation.
Conclusion
In conclusion, Junichi Nishikawa stands out as a luminary in the field of chemical engineering through his patented processes and collaborative efforts. His inventions not only emphasize efficiency and cost-effectiveness but also pave the way for future advancements in the chemistry domain.