Location History:
- Yokkaichi, JA (1976)
- Tokyo, JP (1984 - 1985)
- Yokkaichi, JP (1990 - 1999)
- Ibaraki, JP (2000)
Company Filing History:
8 out of 2,248 
2 out of 2,355 
Years Active: 1976-2000
Title: The Innovative Mind of Yasuhisa Kuriyama
Introduction
Yasuhisa Kuriyama, an accomplished inventor from Yokkaichi, Japan, has made significant contributions to the fields of chemistry and industrial processes. With a remarkable portfolio of 10 patents, Kuriyama has demonstrated a strong commitment to innovation, particularly in the development of efficient chemical processes and compositions.
Latest Patents
Among Kuriyama's recent advancements are several noteworthy patents. His inventions include innovative bleaching agent compositions and processes for producing ketazine and hydrazine. One of his standout developments is a process for continuously and stably synthesizing a ketazine from hydrogen peroxide, ammonia, and methyl ethyl ketone in the presence of a catalytic solution. This method effectively removes sec-butyl alcohol by distillation from methyl ethyl ketone, allowing for its reuse in a circular system. Furthermore, Kuriyama's process for preparing hydrazine hydrate involves hydrolyzing the ketazine, while circulating unreacted ketone to prevent impurity accumulation, ultimately optimizing yield for extended periods.
Career Highlights
Throughout his career, Yasuhisa Kuriyama has worked with leading companies in the chemical industry, including Mitsubishi Gas Chemical Company, Inc. and SC Johnson & Son, Inc. His extensive experience at these firms has contributed to his deep understanding of chemical processes and product development.
Collaborations
Kuriyama has collaborated with esteemed colleagues such as Minoru Kakuda and Junichiro Sugano, contributing to a productive dynamic in his research and development projects. These partnerships have helped foster innovation and drive the success of his patents.
Conclusion
Yasuhisa Kuriyama stands out as a pivotal figure in the world of chemical innovations. His dedication to creating efficient chemical processes and compositions has not only advanced the field but also paved the way for future developments in industrial chemistry. With his continued pursuit of innovation, Kuriyama is likely to contribute even more groundbreaking inventions in the years to come.