Company Filing History:
Years Active: 2015
Title: Yuya Sumino - Innovator in Copper Alloys
Introduction
Yuya Sumino is an inventor based in Shimonoseki-shi, Japan. He is known for his work in developing advanced copper alloys for electric and electronic applications. Although he currently holds no granted patents, his innovative ideas are reflected in his latest patent applications.
Latest Patent Applications
One of his notable applications is for a copper alloy designed for electric and electronic parts. This Cu—Cr—Ti—Si alloy comprises Cr: 0.15-0.4 mass %, Ti: 0.005-0.15 mass %, and Si: 0.01-0.05 mass %, with the remainder consisting of Cu and inevitable impurities. The contents of S, O, and C out of the inevitable impurities are limited to S: 0.005 mass % or less, O: 0.005 mass % or less, and C: 0.004 mass % or less, ensuring a total content of S, O, and C at 0.007 mass % or less. Additionally, the alloy may contain one or more elements selected from Zn, Sn, and Mg by 0.001-1.0 mass % in total, enhancing its stress relaxation resistance characteristics.
Another application focuses on a copper alloy sheet that excels in strength, electroconductivity, and bending workability. This copper alloy contains Cr of 0.10% to 0.50%, Ti of 0.010% to 0.30%, and Si of 0.01% to 0.10%. The alloy's composition is carefully balanced, with a mass ratio of Cr to Ti ranging from 1.0 to 30 and Cr to Si from 3.0 to 30. The microstructure of the copper alloy features grains with an average major axis length of 6.0 μm or less and an average minor axis length of 1.0 μm or less, as measured by FESEM-EBSP analysis.
Conclusion
Yuya Sumino's contributions to the field of copper alloys demonstrate his commitment to innovation in materials science. His latest patent applications reflect a focus on enhancing the performance of alloys used in electric and electronic components.