This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Dow Toray Co., Ltd., Railway Technical Research Institute, Sumitomo Cement Co., Ltd.. Active years: 1989-2026.
Company Filing History:
1 out of 20 
1 out of 65 
1 out of 35 Years Active: 1989-2026
Title: Sakae Ushijima: Innovator in Concrete Technology
Introduction
Sakae Ushijima is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of concrete technology, holding 2 patents that showcase his innovative approach to construction materials. His work emphasizes the importance of enhancing the properties of concrete for various applications.
Latest Patents
Ushijima's latest patents include a precast concrete molded body and a method and apparatus for spraying an inorganic hydraulic material. The precast concrete molded body patent describes a cured product of a concrete composition that incorporates a microcapsule with a core-shell structure. This innovative design aims to provide high strength and properties such as air content stability, substance penetration prevention, and freeze-thaw resistance. The second patent focuses on a method for spraying an inorganic hydraulic material composition that contains reinforcing short fibers. This method allows for the fluidization of fibers in a blast of compressed air, ensuring that they are blended effectively with an inorganic hydraulic material before being sprayed.
Career Highlights
Throughout his career, Ushijima has worked with esteemed organizations such as the Railway Technical Research Institute and Sumitomo Cement Co., Ltd. His experience in these companies has allowed him to develop and refine his innovative ideas in concrete technology.
Collaborations
Ushijima has collaborated with notable colleagues, including Seiichi Tottori and Shohiko Miyata. Their combined expertise has contributed to the advancement of concrete technology and the successful development of innovative solutions.
Conclusion
Sakae Ushijima's contributions to concrete technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative approaches continue to shape the future of construction materials.