This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Kawasaki Steel Corporation. Active years: 1984.
Company Filing History:
Years Active: 1984
Title: Norio Sumida: Innovator in Metal Refining Technologies
Introduction
Norio Sumida is a distinguished inventor based in Chiba, Japan. He has made significant contributions to the field of metal refining, particularly through his innovative methods for stirring molten metal. With a total of 2 patents to his name, Sumida's work has advanced the efficiency and effectiveness of metal processing techniques.
Latest Patents
Sumida's latest patents include a method of stirring molten metal and a refractory cylinder designed for this purpose. The stirring method involves repeatedly sucking and rapidly discharging part of the molten metal into and out of a refractory cylinder. This cylinder has a lower opening end immersed in the molten metal within a ladle. The method operates under specific conditions, including an inner diameter of the refractory cylinder being less than 1,000 mm and a relationship between the inner diameter and the weight of the molten metal that ensures optimal stirring. Additionally, a pressurized gas is introduced into the cylinder to enhance the discharge of the molten metal.
Another notable patent is a method of refining molten metal with stirring by repeated operation of suction and discharge. This method involves immersing a refractory cylinder into a molten metal bath and subjecting the inside of the cylinder to alternating evacuation and pressurization. The parameters of pressure reduction velocity and evacuation time are carefully controlled to maximize the efficiency of the refining process.
Career Highlights
Norio Sumida is currently associated with Kawasaki Steel Corporation, where he applies his expertise in metal refining technologies. His innovative approaches have contributed to advancements in the industry, enhancing the quality and efficiency of metal production processes.
Collaborations
Throughout his career, Sumida has collaborated with notable colleagues, including Toshihiko Emi and Toshio Fujimura. These collaborations have fostered a productive environment for innovation and development in metal refining technologies.
Conclusion
Norio Sumida's contributions to the field of metal refining through his innovative patents and methods have established him as a key figure in the industry. His work continues to influence the efficiency of metal processing, showcasing the importance of innovation in manufacturing.