Location History:
- Kurashiki, JP (1999 - 2002)
- Okayama, JP (2009)
Company Filing History:
Years Active: 1999-2009
Title: Masashi Yabuno: Innovator in Pyromellitic Dianhydride Production
Introduction
Masashi Yabuno is a notable inventor based in Okayama, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of pyromellitic dianhydride and aromatic polycarboxylic acids. With a total of 3 patents to his name, Yabuno's work has implications for various industrial applications.
Latest Patents
Yabuno's latest patents include a production method for highly pure pyromellitic dianhydride. This innovative method involves heating crude pyromellitic acid in the absence of acetic anhydride, which converts a portion of the acid to pyromellitic anhydride. The subsequent step includes heating the mixture in the presence of acetic anhydride to complete the anhydrization process. The resulting pyromellitic dianhydride is characterized by minimal impurities, leading to less discoloration and improved particle properties that prevent clogging during transportation and storage.
Another significant patent is a process for producing aromatic polycarboxylic acid. This process entails the liquid phase oxidation of polyalkyl-substituted aromatic aldehyde with molecular oxygen in a water solvent, utilizing a catalyst that includes bromine or both bromine and heavy metals. The oxidation occurs in two stages, allowing for the efficient production of trimellitic acid or pyromellitic acid.
Career Highlights
Masashi Yabuno is currently employed at Mitsubishi Gas Chemical Company, Inc., where he continues to advance his research and development efforts. His work has been instrumental in enhancing the production methods of important chemical compounds, contributing to the company's reputation in the industry.
Collaborations
Yabuno has collaborated with notable colleagues such as Hiroshi Ogawa and Atsushi Okoshi. Their combined expertise has fostered innovation and progress in their respective fields.
Conclusion
Masashi Yabuno's contributions to the field of chemical engineering, particularly through his patents, highlight his role as a key innovator. His work not only advances industrial processes but also sets a foundation for future developments in chemical production.