Location History:
- Kurashiki, JP (1992)
- Okayama-ken, JP (1999)
Company Filing History:
2 out of 2,250 
1 out of 789 
1 out of 14 Years Active: 1992-1999
Title: Fumio Okoshi: Innovator in Aromatic Carboxylic Acid Production
Introduction
Fumio Okoshi is a notable inventor based in Okayama-ken, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of aromatic carboxylic acids. With a total of 2 patents, his work has advanced industrial processes in this area.
Latest Patents
Okoshi's latest patents include a process for producing aromatic carboxylic acid and a process for producing high purity isophthalic acid. The first patent details a method for producing aromatic carboxylic acids, such as iso- or tere-phthalic acid, through the liquid-phase oxidation of alkyl-group-substituted aromatic compounds in acetic acid. This innovative process involves dehydrating water-containing acetic acid by azeotropic distillation, allowing for efficient recycling of the solvent while maintaining optimal separation efficiency.
The second patent focuses on producing high-purity isophthalic acid by oxidizing m-xylene with an oxygen-containing gas in a hydrous acetic acid solvent. This method utilizes a cobalt/manganese/bromine system catalyst and is designed to produce isophthalic acid with excellent whiteness. The process includes multiple oxidation steps and careful management of reaction conditions to ensure high purity and yield.
Career Highlights
Throughout his career, Fumio Okoshi has worked with prominent companies such as Mitsubishi Gas Chemical Company, Inc. and Toyo Boseki Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in chemical processes and innovation.
Collaborations
Okoshi has collaborated with notable colleagues, including Kazuo Tanaka and Terumasa Yoshida. These partnerships have likely enhanced his research and development efforts in the field of aromatic carboxylic acid production.
Conclusion
Fumio Okoshi's contributions to the field of chemical engineering, particularly in the production of aromatic carboxylic acids, demonstrate his innovative spirit and commitment to advancing industrial processes. His patents reflect a deep understanding of chemical reactions and their applications in industry.