Location History:
- Takatsuki, JP (2008 - 2009)
- Osaka, JP (2002 - 2011)
Company Filing History:
6 out of 6,894 
1 out of 55 Years Active: 2002-2011
Title: **The Innovative Journey of Hiroharu Kumazawa**
Introduction
Hiroharu Kumazawa, an esteemed inventor based in Osaka, Japan, has made notable contributions to the field of chemical innovations. With a total of seven patents to his name, his work primarily focuses on the synthesis of complex chemical compounds. His inventive processes reveal his deep understanding of chemical reactions and his commitment to advancing scientific knowledge.
Latest Patents
Among his most recent patents, Kumazawa has developed a process for producing (Z)-1-phenyl-1-(N,N-diethylaminocarbonyl)-2-phthalimidomethylcyclopropane. This process involves the reaction of (Z)-1-phenyl-1-(N,N-diethylaminocarbonyl)-2-hydroxymethylcyclopropane with an orthoester and a Brønsted acid, ultimately leading to a reaction product that can be further reacted with a phthalimidating agent. Additionally, he pioneered a process for producing (Z)-1-phenyl-1-diethylaminocarbonyl-2-aminomethylcyclopropane hydrochloride, which involves reacting (Z)-1-phenyl-1-diethylaminocarbonyl-2-phthalimidomethylcyclopropane with an aqueous methylamine solution to obtain the desired hydrochloride compound.
Career Highlights
Hiroharu Kumazawa has established a solid career in notable companies, such as Sumitomo Chemical Company, Limited and Sumika Fine Chemicals Co., Ltd. His tenure in these companies has provided him with the platform to explore and innovate in the field of chemical production, enabling him to secure multiple patents that reflect his inventive spirit and technical expertise.
Collaborations
During his career, Kumazawa has collaborated with other talented individuals in the field. His notable coworkers, including Taketo Hayashi and Junichi Nishikawa, have contributed to his projects and innovations, emphasizing the importance of teamwork in the process of invention and scientific exploration.
Conclusion
Hiroharu Kumazawa stands out as a prominent inventor with a focus on producing complex chemical substances. His innovative processes and collaborations underscore his commitment to the advancement of chemical science. As he continues his work, the potential for further innovation in his field remains tremendous, promising exciting developments in the years to come.