Kazuhiro Otsuka

Title: Kazuhiro Otsuka: Innovator in Shape Memory Alloys

Introduction

Kazuhiro Otsuka is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of materials science, particularly in the development of shape memory alloys. His innovative work has led to the filing of multiple patents, showcasing his expertise and dedication to advancing technology.

Latest Patents

Otsuka holds 2 patents that highlight his groundbreaking research. One of his latest patents is for a functional composite material using shape memory alloy and its production method. This material is characterized by being molded through the solidification of a resin base material around a martensite-phase shape memory alloy wire. This wire is produced by cold drawing a shape memory alloy that transitions between an austenite phase and a martensite phase via a phase transformation temperature. The resulting material enables smooth motion, effectively utilizing the properties of the shape memory alloy.

Another significant patent by Otsuka is a method of manufacturing high-temperature shape memory alloys. This method involves cold-working a high-temperature shape memory alloy, where the reverse martensite transformation start temperature reaches 350°C or above. The process includes a first heat treatment within the incubation time required for recrystallization and a second heat treatment for annealing. The composition of the high-temperature shape memory alloy includes various titanium and nickel-based alloys, demonstrating Otsuka's innovative approach to material engineering.

Career Highlights

Throughout his career, Kazuhiro Otsuka has worked with notable organizations, including the Furukawa Electric Co., Ltd. and the National Institute of Advanced Industrial Science and Technology. His experience in these institutions has allowed him to collaborate with other experts in the field and contribute to significant advancements in material science.

Collaborations

Otsuka has collaborated with esteemed colleagues such as Dmitrii Victorovich Golberg and Tatsuhiko Ueki. These partnerships have further enriched his research and development efforts, leading to innovative solutions in the realm of shape memory alloys.

Conclusion

Kazuhiro Otsuka's contributions to the field of shape memory alloys are noteworthy and impactful. His patents and collaborations reflect his commitment to innovation and excellence in materials science. Otsuka continues to inspire future generations of inventors and researchers in the industry.