Location History:
- Yokohama, JA (1978)
- Yokohama, JP (1978 - 1995)
Company Filing History:
2 out of 23 
1 out of 2,347 
1 out of 11 Years Active: 1978-1995
Title: The Innovative Contributions of Tokitaro Hoshijima
Introduction
Tokitaro Hoshijima is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of engineering, particularly in the areas of concrete reinforcement and rubber hardness measurement. With a total of three patents to his name, Hoshijima's work reflects a commitment to advancing technology and improving material performance.
Latest Patents
Hoshijima's latest patents include a method for reinforcing concrete structures. This innovative method involves applying an adhesive to a long fiber prepreg, attaching it to the surface of a concrete structure, and curing the thermosetting resin at ambient temperature. The long fiber prepreg is designed with a thermosetting resin that has a curing temperature of 70 degrees Celsius or above, while the adhesive accelerates the curing process at lower temperatures.
Another significant patent is an apparatus for measuring the hardness of rubber. This device utilizes a needle that is urged against the surface of a rubber sample, measuring the degree of penetration. The apparatus includes a coil spring, a lever, and a releasable latch, allowing for precise measurement of rubber hardness. The output signal from the electric transducer is processed to provide a digital display of the displacement.
Career Highlights
Throughout his career, Hoshijima has worked with prominent companies such as Mitsubishi Kasei Kogyo and Mitsubishi Chemical Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in material science and engineering.
Collaborations
Hoshijima has collaborated with notable coworkers, including Takeshi Yamawaki and Tuneo Tanaka. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Tokitaro Hoshijima's contributions to engineering through his patents demonstrate his innovative spirit and dedication to improving material performance. His work continues to influence the fields of concrete reinforcement and rubber measurement, showcasing the importance of invention in advancing technology.