Company Filing History:
Years Active: 2022-2025
Title: Nobuhito Yanagihara: Innovator in DC High-Voltage Relay Technology
Introduction
Nobuhito Yanagihara is a prominent inventor based in Tomioka, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of high-voltage relay technology. With a focus on enhancing the performance and reliability of electrical components, Yanagihara has secured a total of 2 patents.
Latest Patents
Yanagihara's latest patents include innovations in DC high-voltage relays and contact materials specifically designed for these relays. One of his patents describes a DC high-voltage relay that features at least one contact pair, which includes a movable contact and a fixed contact. This relay is designed to operate with a contact force and/or an opening force of 100 gf or more, and it has a rated voltage of 48 V or more. The movable and/or fixed contacts utilize an Ag oxide-based contact material. The metal components of this contact material contain at least one metal M, which is primarily composed of Zn, along with Ag and inevitable impurity metals. The contact material is engineered to have a content of metal M ranging from 0.2% by mass to 8% by mass based on the total mass. Additionally, the contact material's structure includes one or more oxides of metal M, which have an average particle size between 0.01 μm and 0.4 μm, dispersed in a matrix of Ag or an Ag alloy.
Another patent focuses on a similar DC high-voltage relay, which also includes a contact pair with a contact force and/or opening force of 100 gf or more, and operates at a voltage of 48 V or more. This relay also employs an Ag oxide-based contact material, with metal components that include at least one metal M primarily containing Sn, along with Ag and inevitable impurity metals. The content of metal M in this contact material is similarly set between 0.2% by mass and 8% by mass based on the total mass of all metal components.
Career Highlights
Nobuhito Yanagihara is currently employed at Tanaka Kikinzoku Kogyo K.K., where he continues to innovate and develop advanced technologies in the field of electrical engineering. His work has been instrumental in improving the efficiency and effectiveness