Yoshifumi Yamaoka

Title: The Innovations of Yoshifumi Yamaoka

Introduction

Yoshifumi Yamaoka is a notable inventor based in Haruna, Japan. He is recognized for his contributions to the field of ceramic semiconductors, particularly through his innovative patent. His work has implications for various applications, including capacitors.

Latest Patents

Yamaoka holds a patent for an "Intergranular insulation type polycrystalline ceramic semiconductive." This invention comprises a major proportion of strontium titanate (SrTiO.sub.3), along with minor amounts of niobium oxide (Nb.sub.2 O.sub.5) or tantalum oxide (Ta.sub.2 O.sub.5), and either germanium oxide (GeO.sub.2) or zinc oxide (ZnO). The composition also includes bismuth oxide (Bi.sub.2 O.sub.3) or a mixture of bismuth oxide, lead oxide (PbO), and boric oxide (B.sub.2 O.sub.3). This material is particularly useful as a capacitor, showcasing Yamaoka's innovative approach to ceramic materials.

Career Highlights

Throughout his career, Yamaoka has worked with prominent companies such as Sony Corporation and Taiyo Yuden Co., Ltd. His experience in these organizations has contributed to his expertise in the field of semiconductor technology.

Collaborations

Yamaoka has collaborated with notable individuals in his field, including Yasunori Takahashi and Nobutatsu Yamaoka. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Yoshifumi Yamaoka's contributions to the field of ceramic semiconductors are significant, particularly through his innovative patent. His work continues to influence the development of materials used in capacitors and other applications.