This inventor holds 7 USPTO granted patents and 2 published patent applications. Top assignees: Murata Manufacturing Co., Ltd., Murata Manufacturing Co., Ltd.. Active years: 2025-2026.
Company Filing History:
5 out of 701 
2 out of 13,796 
Years Active: 2025-2026
Title: Toru Wakamatsu: Innovator in Multilayer Ceramic Capacitors
Introduction
Toru Wakamatsu is a notable inventor based in Nagaokakyo, Japan. He has made significant contributions to the field of electronics, particularly in the development of multilayer ceramic capacitors. With a total of 7 patents to his name, Wakamatsu's work has had a considerable impact on the industry.
Latest Patents
Wakamatsu's latest patents focus on advancements in multilayer ceramic capacitors. One of his innovations describes a multilayer ceramic capacitor that includes dielectric layers made of a ceramic material and inner electrode layers that are laminated. Each inner electrode layer features a first metal as a main component, along with dielectric coupling portions that penetrate through in a lamination direction. These portions are filled with adjacent dielectric layers, effectively coupling them together. Additionally, a solid-dissolved layer is provided at the interface between the dielectric coupling portions and the inner electrode layers, containing a second metal that differs from the first metal. The content of this second metal is maintained between 0.1 mol % and 10 mol % in relation to 100 mol of the first metal.
Another patent by Wakamatsu involves a multilayer ceramic capacitor that includes first and second inner electrodes arranged alternately with respect to the stacking direction of the multilayer body. The polarity is determined based on the voltage applied between the outer electrodes, ensuring that the first inner electrodes function as positive electrodes while the second inner electrodes serve as negative electrodes. The first inner electrodes are composed primarily of nickel, while the second inner electrodes include nickel and at least one additional metal element with higher standard electrode potentials.
Career Highlights
Wakamatsu has worked with Murata Manufacturing Co., Ltd., a leading company in the electronics sector. His experience at Murata has allowed him to refine his skills and contribute to innovative projects in the field of capacitors.
Collaborations
Wakamatsu has collaborated with Daisuke Hamada, a fellow innovator in the industry. Their partnership has likely fostered the development of new ideas and technologies in the realm of multilayer ceramic capacitors.
Conclusion
Toru Wakamatsu is a distinguished inventor whose work in multilayer ceramic capacitors has advanced the field of electronics. His innovative patents and collaborations highlight his commitment to technological progress.