Location History:
- Oita, JP (1981 - 1982)
- Toyono, JP (1987)
- Ibaraki, JP (1987 - 1991)
- Osaka, JP (1987 - 1993)
Company Filing History:
11 out of 6,892 
2 out of 5 
1 out of 2 Years Active: 1981-1993
Title: Yuzo Maegawa: Innovator in Chemical Processes
Introduction
Yuzo Maegawa is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of chemistry, particularly in the production of specialized compounds. With a total of 11 patents to his name, Maegawa's work has had a notable impact on various chemical processes.
Latest Patents
One of Maegawa's latest patents involves a process for producing 1,4-dihydroxy-2-arylnaphthoate. This innovative method allows for the preparation of pure 1,4-dihydroxy-2-arylnaphthoate in high yield. The process entails reacting 1,4-dihydroxy-2-naphthoic acid with triarylphosphite in the presence of an acid catalyst, which can be either organic or inorganic. The resulting compound is crystallized from a mixed solvent primarily consisting of lower alcohols and water. Further purification is achieved through crystallization from a mixed solvent that includes lower alcohols, water, and an extraction solvent, such as alkyl-substituted aromatic hydrocarbons or halogen-substituted aliphatic or aromatic hydrocarbons.
Career Highlights
Throughout his career, Yuzo Maegawa has worked with notable companies, including Sumitomo Chemical Company, Limited and Daiei Chemical Co., Ltd. His experience in these organizations has allowed him to refine his expertise in chemical processes and innovations.
Collaborations
Maegawa has collaborated with several talented individuals in his field, including Yukoh Takahashi and Tatsuo Kaneoya. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.
Conclusion
Yuzo Maegawa's contributions to the field of chemistry through his innovative patents and collaborations highlight his role as a significant inventor. His work continues to influence the production of important chemical compounds, showcasing the importance of innovation in this field.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.