This inventor holds 2 USPTO granted patents. Top assignee: Kawasaki Steel Corporation. Active years: 1976-1981.
Location History:
- Chiba, JA (1976)
- Kobe, JP (1981)
Company Filing History:
Years Active: 1976-1981
Title: The Innovations of Yoshio Obata
Introduction
Yoshio Obata is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of electrical steel manufacturing, holding a total of 2 patents. His work focuses on improving the properties of silicon steel sheets, which are essential in various electrical applications.
Latest Patents
Obata's latest patents include a method of producing grain-oriented silicon steel sheets. This innovative method allows for the creation of a grain-oriented silicon steel sheet that has substantially no glass film. The process involves subjecting a cold rolled silicon steel sheet to decarburization annealing, applying a specific annealing separator, and finally annealing the treated steel sheet. The resulting steel sheet exhibits excellent punchability when coated with a phosphate system or chromate-organic resin mixture system insulating coating.
Another significant patent is for the manufacturing of single-oriented electrical steel sheets. This method produces sheets with high magnetic induction by hot rolling a silicon steel raw material with specific chemical compositions. The process includes multiple annealing and cold rolling steps to develop secondary recrystallized grains with a desired orientation. The final annealing step occurs at a temperature range of 800°C to 920°C, yielding optimal results.
Career Highlights
Yoshio Obata is associated with Kawasaki Steel Corporation, where he has been instrumental in advancing steel manufacturing techniques. His expertise in the field has led to innovations that enhance the performance of electrical steel products.
Collaborations
Obata has collaborated with notable coworkers, including Takuichi Imanaka and Takahiro Kan. Their combined efforts have contributed to the development of advanced manufacturing processes in the steel industry.
Conclusion
Yoshio Obata's contributions to the field of electrical steel manufacturing through his innovative patents have significantly impacted the industry. His work continues to influence the development of high-performance materials essential for modern electrical applications.