Location History:
- Yamaguchi, JP (1995 - 2008)
- Ube, JP (1981 - 2010)
Company Filing History:
37 out of 1,432 
3 out of 107 
1 out of 1,235 Years Active: 1981-2010
Areas of Expertise:
Title: Katsumasa Harada: A Pioneer in Chemical Innovations
Introduction:
Katsumasa Harada, an accomplished inventor based in Ube, Japan, has significantly contributed to the field of chemistry with an impressive portfolio of 40 patents. His work predominantly focuses on the development of novel compounds and methods that have potential applications in pharmaceuticals and material sciences.
Latest Patents:
Among Harada's latest innovations is a patented process for preparing dibenzothiazepine compounds. This method involves subjecting a 2-amino-2'-carboxy-diphenylsulfide compound to a dehydration-condensation reaction with the aid of an acidic catalyst. Furthermore, the compound itself is synthesized by reducing a 2-nitro-2'-carboxy-diphenylsulfide compound in a lower aliphatic ester solvent. The aforementioned nitro compound is created through the reaction of nitrobenzene with a thiosalicylic acid compound in a mixture of a lower aliphatic alcohol and water. Another notable patent pertains to the creation of a 5-fluorooxindole-3-carboxylic acid ester, which presents promising chemical properties for various applications.
Career Highlights:
Harada's journey through the realm of innovation has seen him work with prominent companies, including Ube Industries, Inc. and AstraZeneca U.K. Limited. His experiences in these respected organizations have fueled his research and inventions, allowing him to make substantial contributions to the chemical industry.
Collaborations:
Throughout his career, Katsumasa Harada has collaborated with notable colleagues such as Ryoji Sugise and Shigeyoshi Nishino. These partnerships have undoubtedly enriched his research endeavors, leading to groundbreaking advancements in the synthesis of complex chemical compounds.
Conclusion:
Katsumasa Harada stands as a distinguished figure in the field of chemical innovations. His extensive patent portfolio showcases his commitment to advancing technology and chemistry through inventive processes and compounds. As he continues to push the boundaries of scientific exploration, Harada's work remains a testament to the power of innovation in shaping the future.