Company Filing History:
6 out of 42,496 
2 out of 222 Years Active: 1984-1999
Title: Kenichi Usami: Innovator in High Toughness Stainless Steel
Introduction
Kenichi Usami is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of materials science, particularly in the development of high toughness stainless steel. With a total of 6 patents to his name, Usami's work has had a considerable impact on fluid machinery and power generation technologies.
Latest Patents
Among his latest patents, Usami has developed a stainless steel type 13Cr5Ni that exhibits high toughness. This material is designed for use in an ultra high head pump turbine power generating plant. The turbine features a runner that rotates with water flow supplied through a high head conducting tube. The specifications of the runner include a head range of 400-600 meters and a diameter of at least 5 meters. The runner demonstrates impressive toughness characteristics at room temperature, including a tensile strength of at least 650 N/mm² and a fracture toughness of at least 6000 N/mm³/².
Another notable patent involves the formulation of high toughness stainless steel type 13Cr5Ni, which contains specific percentages of carbon, silicon, manganese, chromium, nickel, and molybdenum. This material serves as a structural component for fluid machinery, showcasing its versatility and strength.
Career Highlights
Throughout his career, Kenichi Usami has worked with esteemed companies such as Hitachi, Ltd. and Babcock-Hitachi Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in materials engineering and contribute to innovative projects.
Collaborations
Usami has collaborated with notable colleagues, including Seishin Kirihara and Hiroshi Takayasu. These partnerships have further enhanced his research and development efforts in the field of high toughness materials.
Conclusion
Kenichi Usami's contributions to the field of high toughness stainless steel and fluid machinery are noteworthy. His innovative patents and collaborations reflect his dedication to advancing technology in power generation. His work continues to influence the industry and inspire future innovations.