Company Filing History:
Years Active: 1991
Title: Kiyoshi Masujima: Innovator in Vacuum Pump Technology
Introduction
Kiyoshi Masujima is a notable inventor based in Chigasaki, Japan. He has made significant contributions to the field of vacuum pump technology. His innovative designs have paved the way for advancements in various industrial applications.
Latest Patents
Masujima holds a patent for a "Screw type vacuum pump with introduced inert gas." This invention features a pump casing with a suction inlet and a discharge outlet. It incorporates a pair of rotors that mesh and rotate in synchronization. The vacuum pump is designed to evacuate a reaction vessel, applying process gas to achieve a predetermined negative pressure condition. During operation, inert gas is introduced into a compression working chamber, either directly or through a sealing portion near the discharge outlet. This process adiabatically compresses the inert gas, generating heat to warm the rotors and casing wall. Additionally, the inert gas reduces the partial pressure of the process gas, preventing the accumulation of side reaction products on the rotors and casing wall.
Career Highlights
Kiyoshi Masujima is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop and refine his inventions, contributing to the company's reputation for excellence in engineering.
Collaborations
Masujima has collaborated with notable colleagues, including Koutarou Naya and Kazuaki Shiinoki. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.
Conclusion
Kiyoshi Masujima's contributions to vacuum pump technology exemplify the spirit of innovation. His patented designs not only enhance industrial processes but also demonstrate the importance of collaboration in advancing technology.