Company Filing History:
5 out of 172 
1 out of 3,871 
Years Active: 1983-1992
Title: Innovations of Yoshiyasu Kamiyama
Introduction
Yoshiyasu Kamiyama is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of rare earth separation and membrane technology. With a total of six patents to his name, Kamiyama's work has had a considerable impact on various industrial processes.
Latest Patents
One of his latest patents is focused on the refining of rare earth elements. This invention involves a process for separation and refining, where a dilute solution of rare earths is treated using reverse osmosis membrane separation. This method not only concentrates the solution but also reduces its volume, allowing for the water that passes through the membrane to be reused in the refining process. Another significant patent is for a composite semipermeable membrane and its preparation process. This membrane consists of a porous substrate, an ultrathin film formed through polymerization, and a porous inner layer made of water-insoluble polyvinyl alcohol.
Career Highlights
Throughout his career, Kamiyama has worked with prominent companies such as Nitto Electric Industrial Co., Ltd. and Nitto Denko Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of materials science and engineering.
Collaborations
Kamiyama has collaborated with notable coworkers, including Keisuke Nakagome and Noriaki Yoshioka. Their combined expertise has contributed to the advancement of technologies related to rare earths and membrane systems.
Conclusion
Yoshiyasu Kamiyama's contributions to the field of innovation, particularly in rare earth separation and membrane technology, highlight his role as a significant inventor. His patents reflect a commitment to advancing industrial processes and improving efficiency in resource management.