Company Filing History:
Years Active: 2014-2018
Title: Innovations in Lead-Free Solder Alloys by Yoshie Yamanaka
Introduction
Yoshie Yamanaka, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of material science with a focus on solder alloys. With a total of eight patents to his name, his innovations are characterized by their application in advanced electronic devices, showcasing his commitment to environmentally friendly solutions and high-performance materials.
Latest Patents
Yamanaka's latest patents include groundbreaking developments in lead-free solder alloys. One of his notable inventions is a unique lead-free solder alloy that significantly reduces electromigration and resistance increase during electric conduction under high current density. This alloy comprises 1.0-13.0 mass % of Indium (In), 0.1-4.0 mass % of Silver (Ag), 0.3-1.0 mass % of Copper (Cu), with the remainder being Tin (Sn). It exhibits excellent tensile properties even at elevated temperatures above 100°C, making it suitable for use in CPUs and power semiconductors.
Another remarkable patent involves a solder alloy designed for portable devices, which consists of 0.2-1.2 mass % of Silver, 0.6-0.9 mass % of Copper, 1.2-3.0 mass % of Bismuth (Bi), 0.02-1.0 mass % of Antimony (Sb), 0.01-2.0 mass % of Indium, and a remainder of Tin. This alloy provides excellent resistance to drop impacts and showcases remarkable heat cycle properties, maintaining functionality in varying temperatures, such as high heat inside vehicles or the cold of snowy outdoor environments.
Career Highlights
Yoshie Yamanaka's career is marked by a strong dedication to innovation within the solder alloy domain. Working at Senju Metal Industry Co., Ltd., he has developed materials that align with modern demands for electronic robustness and environmental safety. His contributions have not only advanced technological capabilities but have also set a precedent for eco-friendly practices in the manufacturing of electronic components.
Collaborations
Throughout his career, Yamanaka has collaborated with esteemed colleagues, including Tsukasa Ohnishi and Shunsaku Yoshikawa. These partnerships have enabled the fusion of ideas and expertise, driving forward the development of innovative soldering solutions that benefit the electronics industry.
Conclusion
Yoshie Yamanaka continues to play a vital role in the advancement of solder alloys, with his innovative patents reflecting a blend of performance and environmental responsibility. His work is crucial in supporting the ongoing evolution of electronic devices, ensuring they are reliable, efficient, and capable of meeting the challenges of modern technology. Through his dedication and collaboration, Yamanaka exemplifies the spirit of innovation needed in today’s rapidly evolving technological landscape.