Company Filing History:
Years Active: 1990-1997
Title: Hitoshi Ueda: Innovator in Ferrite Technology
Introduction
Hitoshi Ueda is a notable inventor based in Tottori, Japan. He has made significant contributions to the field of ferrite technology, holding a total of 2 patents. His work focuses on enhancing the performance of materials used in power supplies and dielectric ceramics.
Latest Patents
Ueda's latest patents include a Ni ferrite sintered body designed for power supplies. This innovative material comprises 48.0-50.0 mol % of Fe₂O₃, 14.0-24.0 mol % of NiO, and 28.0-36.0 mol % of ZnO, with a maximum impurity level of 50 ppm of phosphorus. The sintered body achieves a minimum core loss of 30 kW/m³ or less at 50 kHz and 50 mT. Additionally, the segregation percentage of phosphorus in the crystal structure is maintained at 1% or less by area. Ueda's work also includes a dielectric ceramic composition characterized by a high relative dielectric constant, a high quality factor, and a small temperature coefficient of resonance frequency. This composition consists of calcium oxide, strontium oxide, bismuth oxide, and titanium oxide.
Career Highlights
Throughout his career, Hitoshi Ueda has worked with prominent companies such as Nippon Ferrite, Ltd. and Hitachi Ferrite, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in ferrite technology.
Collaborations
Ueda has collaborated with notable colleagues, including Takashi Tsuboi and Emi Nakagawa. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Hitoshi Ueda is a distinguished inventor whose work in ferrite technology has led to significant advancements in the field. His innovative patents and collaborations highlight his commitment to improving material performance in power supplies and dielectric ceramics.