Location History:
- Ibaraki, JP (1984 - 1985)
- Nara, JP (1989 - 1991)
Company Filing History:
6 out of 6,893 
1 out of 5 Years Active: 1984-1991
Title: Kiyoyasu Hashimoto: Innovator in Chemical Processes
Introduction
Kiyoyasu Hashimoto is a notable inventor based in Nara, Japan. He has made significant contributions to the field of chemistry, particularly in the development of processes for producing various chemical compounds. With a total of six patents to his name, Hashimoto's work has had a considerable impact on industrial applications.
Latest Patents
One of Hashimoto's latest patents is for the process of producing 2,4-dichloro-3-alkyl-6-nitrophenol. This compound serves as a precursor for 2,4-dichloro-3-alkyl-6-aminophenol, which is useful in the production of cyan couplers for color photography. The industrially advantageous production process involves either the nitration of 2,4,5-trichloro-3-alkylbenzene followed by hydrolysis or the hydrolysis of 2,4,5-trichloro-3-alkylbenzene-6-sulfonic acid followed by nitration. The starting materials for these processes are easily accessible, making them practical for industrial use.
Another significant patent involves 2,6-dicyano-4'-morpholinoazobenzene compounds, which are useful for dyeing hydrophobic fibers. These monoazo compounds exhibit superior dyeing and build-up properties, resulting in brilliantly colored products with excellent fastness properties.
Career Highlights
Throughout his career, Kiyoyasu Hashimoto has worked with prominent companies such as 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
Hashimoto has collaborated with notable coworkers, including Yasuyoshi Ueda and Hideo Hattori. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.
Conclusion
Kiyoyasu Hashimoto is a distinguished inventor whose work in chemical processes has led to significant advancements in the industry. His innovative patents and collaborations highlight his contributions to the field, making him a key figure in chemical innovation.
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.