Company Filing History:
Years Active: 1992
Title: **Masao Yokoyama: Pioneer in Oxide Superconductor Powder Production**
Introduction
Masao Yokoyama, an innovative inventor based in Kobe, Japan, has made significant contributions to the field of materials science. He is particularly renowned for his work on developing processes that enhance the production of raw material powders for oxide superconductors. His groundbreaking patent reflects his commitment to advancing technology in this specialized area.
Latest Patents
Yokoyama holds a patent for a novel coprecipitation process aimed at preparing bulk powders for oxide superconductors. His patent outlines a method involving the mixing of alcohol solutions containing copper nitrate and lanthanoid metal nitrate, along with compounds like barium hydroxide or barium alkoxide. This process results in a coprecipitate that can be thermally decomposed to produce fine particles with a size of not more than 1 µm. This innovative approach stands out because it avoids the formation of barium carbonate during calcination, which is typically stable to heat. Consequently, the bulk powder can be produced at lower temperatures while maintaining excellent stoichiometry, high surface energy, and superior sintering properties.
Career Highlights
Masao Yokoyama is associated with Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, a company known for its advancements in chemical processes and materials. His unique contributions to research and development have not only enhanced the company’s portfolio but also positioned him as a leading figure in the field of superconductor materials.
Collaborations
Throughout his career, Yokoyama has collaborated with remarkable colleagues, including Tsutomu Nanao and Kenji Yamamoto. These collaborations have facilitated the exchange of ideas and have helped drive forward various innovative projects within their field.
Conclusion
In conclusion, Masao Yokoyama's contributions to the development of oxide superconductor powder through his patented coprecipitation process mark him as a significant inventor in material science. His work at Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, alongside esteemed coworkers, continues to influence the industry and paves the way for future advancements in superconductor technology.