Company Filing History:
2 out of 1,482 
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Years Active: 2003-2025
Title: Hiroshi Kumagai: Innovator in Brazing Technology and Tape Mechanisms
Introduction
Hiroshi Kumagai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the fields of brazing technology and tape mechanisms. With a total of four patents to his name, Kumagai's work reflects a commitment to innovation and engineering excellence.
Latest Patents
Kumagai's latest patents include a method for brazing a stacked body with a screen. This invention utilizes a brazing sheet that can be employed under an inert gas atmosphere without the need for flux. The brazing sheet consists of at least three layers, including a core material, a brazing material layer, and an intermediate layer. The core material is made from a first aluminum alloy, while the intermediate layer is composed of a second aluminum alloy with specific weight percentages of various elements. Another notable patent is for a tape reel and tape cartridge. This invention features a cylindrical reel hub designed to withstand a load of 300 N with minimal deformation, ensuring durability and reliability in its application.
Career Highlights
Throughout his career, Hiroshi Kumagai has worked with esteemed companies such as Yokogawa Electric Corporation and Sony Group Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking projects in technology and engineering.
Collaborations
Kumagai has collaborated with notable coworkers, including Toshiaki Shirai and Naoki Ura. Their combined expertise has fostered an environment of innovation and creativity, leading to the development of advanced technologies.
Conclusion
Hiroshi Kumagai's contributions to brazing technology and tape mechanisms highlight his role as a significant inventor in Japan. His innovative patents and collaborations with industry leaders underscore his impact on the field of engineering.