This inventor holds 5 USPTO granted patents. Top assignee: Nippon Steel Corporation. Active years: 1977-1984.
Location History:
- Yokohama, JA (1977 - 1978)
- Yokohama, JP (1982 - 1984)
Company Filing History:
Years Active: 1977-1984
Title: The Innovations of Satohiro Hayami
Introduction
Satohiro Hayami is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of electromagnetic steel sheet production, holding a total of 5 patents. His work focuses on enhancing the magnetic properties of silicon steel, which is crucial for various industrial applications.
Latest Patents
One of Hayami's latest patents is a process for producing grain-oriented electromagnetic steel sheet. This innovative method involves generating a specific temperature gradient during the secondary recrystallization of a grain-oriented silicon steel sheet. This technique results in the development of secondary recrystallized grains with a favorable (110) [001] orientation, thereby increasing the magnetic flux density beyond previous levels. The temperature gradient is established at the boundary region between the primary and secondary recrystallized regions, leading to the preferential development of highly oriented (110) [001] secondary recrystallization nuclei.
Another notable patent is for a process for producing grain-oriented silicon steel strip. In this process, a slab undergoes heating, hot-rolling, cold-rolling, and is subjected to decarburization annealing and secondary recrystallization annealing steps. Hayami addresses the issue of grain coarsening that can occur during high-temperature heating, which may result in streaks in the final product. By applying an asymmetric flow during hot rolling, he effectively eliminates these streaks, thus achieving excellent magnetic properties in the final product.
Career Highlights
Satohiro Hayami is currently employed at Nippon Steel Corporation, where he continues to innovate and improve steel production processes. His expertise in the field has made him a valuable asset to the company and the industry as a whole.
Collaborations
Throughout his career, Hayami has collaborated with notable colleagues such as Fumio Matsumoto and Takashi Furukawa. These partnerships have contributed to the advancement of technology in the steel industry.
Conclusion
Satohiro Hayami's contributions to the field of electromagnetic steel sheet production are noteworthy. His innovative processes have significantly improved the magnetic properties of silicon steel, making him a key figure in the industry. His work continues to influence advancements in steel production technology.