This inventor holds 9 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignees: Kobe Steel, Ltd., Shinko Leadmikk Co., Ltd., Kabushiki Kaisha Kobe Seiko Sho. Active years: 2010-2016.
Company Filing History:
8 out of 1,921 
3 out of 3 
1 out of 1,101 Years Active: 2010-2016
Title: Yasushi Masago: Innovator in Copper Alloy Technology
Introduction
Yasushi Masago is a prominent inventor based in Shimonoseki, Japan. He has made significant contributions to the field of materials science, particularly in the development of copper alloys for various applications. With a total of 9 patents to his name, Masago's work has had a notable impact on the industry.
Latest Patents
One of his latest patents involves a copper alloy strip designed for lead frames in LED packages. This innovation features a Cu-Fe-based copper alloy that enhances heat dissipation, thereby improving the performance of LED lighting. The lead frame is coated with a reflective Ag plating film, which increases the brightness of the LED package. The specifications of the copper alloy strip include an arithmetic mean roughness Ra of 0.2 μm or less, a ten-point mean roughness Rz of 1.2 μm or less, and a maximum height roughness Rz of 1.5 μm or less. Additionally, the alloy contains specific percentages of iron, phosphorus, zinc, and tin to optimize its properties.
Another significant patent by Masago details a method for producing a mating-type connecting part. This involves adjusting a copper sheet to achieve a specific roughness and surface characteristics that facilitate better connection performance. The process includes surface roughening through pressing and subsequent plating with copper and tin, ensuring high-quality connections in electronic applications.
Career Highlights
Throughout his career, Yasushi Masago has worked with notable companies such as Kobe Steel, Ltd. and Shinko Leadmikk Co., Ltd. His experience in these organizations has allowed him to refine his expertise in materials engineering and innovation.
Collaborations
Masago has collaborated with talented individuals in his field, including Koichi Taira and Toshiyuki Mitsui. These partnerships have contributed to the advancement of technology in copper alloys and their applications.
Conclusion
Yasushi Masago is a distinguished inventor whose work in copper alloy technology has led to significant advancements in the industry. His innovative patents and collaborations reflect his commitment to enhancing material performance in various applications.