Company Filing History:
1 out of 42,508 
1 out of 3 Years Active: 1997
Title: Shin Kumagai: Innovator in Valve Technology
Introduction
Shin Kumagai, an accomplished inventor based in Ibaraki-ken, Japan, has made significant contributions to the field of valve technology. With a focus on cobalt-free nickel-based alloys, his innovative designs offer solutions for critical applications in nuclear reactor facilities. As a registered inventor, he holds one patent that reflects his dedication to engineering excellence.
Latest Patents
Kumagai's patent, titled "Valve having facing layers of co-free Ni-base Alloy," describes a valve apparatus comprised of hard facing layers that are essential for the engagement portions of both the valve body and the valve box. The invention emphasizes the use of cobalt-free Ni-base alloys, highlighting the composition of the alloys: one consists of 15 to 20% chromium, 5 to 10% silicon, 10 to 15% iron, and less than 2% tungsten, exhibiting a Vickers hardness of 510 to 630. The second alloy includes 5 to 15% chromium, 5 to 10% silicon, more than 15% and not more than 30% iron, and 1 to 4% tungsten, with a Vickers hardness ranging from 400 to 470. This innovative valve apparatus is particularly suitable for installation in water pipeline systems that communicate with nuclear reactors, enhancing safety and performance.
Career Highlights
Shin Kumagai has garnered professional experience with esteemed companies, including Hitachi, Ltd. and Hitachi Kyowa Kogyo Co., Ltd. His role in these organizations has allowed him to refine his engineering skills while contributing to cutting-edge technological advancements.
Collaborations
Throughout his career, Kumagai has collaborated with notable professionals in the field, including Kikuo Takeshima and Masato Koshiishi. Together, they have worked on projects that leverage their collective expertise and drive further innovation in valve technology.
Conclusion
Shin Kumagai's contributions to valve technology, particularly with cobalt-free nickel-based alloys, solidify his status as a significant inventor in the engineering realm. His patent reflects not only his technical knowledge but also his commitment to improving industrial applications, especially in high-stakes environments like nuclear reactors. As innovations continue to shape our industries, Kumagai's work stands as a testament to the power of ingenuity in engineering.