This inventor holds 35 USPTO granted patents and 1 published patent application, plus 3 CIPO patents and 4 EPO patents, primarily in Steel Manufacturing. Top assignees: Kawasaki Steel Corporation, Jfe Steel Corporation, Toyota Jidosha Kabushiki Kaisha. Active years: 1986-2018.
Location History:
- Okayama, JP (2002 - 2003)
- Chiba, JP (1986 - 2008)
- Handa, JP (2009)
- Chiyoda-ku, JP (2011)
- Aichi, JP (2011 - 2014)
- Tokyo, JP (2008 - 2018)
Company Filing History:
20 out of 1,256 
15 out of 1,953 
1 out of 38,723 
Years Active: 1986-2018
Areas of Expertise:
Title: Kei Sakata: Innovator in Electric Resistance Welding Technology
Introduction
Kei Sakata is a prominent inventor based in Chiba, Japan, known for his groundbreaking work in electric resistance welding technology. With an impressive portfolio of 35 patents, Sakata has significantly contributed to the manufacturing processes of steel tubes and welding techniques used in various industries.
Latest Patents
Some of Kei Sakata's latest patents include innovative methods for manufacturing electrical resistance welded steel tubes. One notable patent outlines a step-by-step process that begins with forming a steel tube material into an almost cylindrical open pipe, where the steel sheet composition is balanced by specific ratios of titanium and nitrogen. The method utilizes induction resistance welding to bond the ends of the open pipe while carefully controlling heat input. Additionally, this patent addresses post-welding processes, including heating the welded steel tube and diameter-reducing rolling, ensuring the bond width meets stringent standards.
Another significant patent details a method for manufacturing electric resistance welding pipes that emphasizes high-quality welded seams. This process involves shaping the lateral edges of a rounded strip before welding, allowing for flexible tapering based on the strip's thickness. By employing techniques such as cutting or fin-pass forming, this method ensures adherence to quality standards in the final welded product.
Career Highlights
Sakata has built a substantial career working for notable companies, including Kawasaki Steel Corporation and JFE Steel Corporation. His tenure in these organizations has provided him with the platform to develop and refine his innovative ideas, leading to numerous patents that enhance the efficiency and effectiveness of welding processes.
Collaborations
Throughout his career, Kei Sakata has worked alongside esteemed colleagues such as Osamu Furukimi and Toshiyuki Kato. Collaborations with these professionals have strengthened his research and development efforts in the field of welding technology, contributing to the advancement of industry practices.
Conclusion
Kei Sakata's contributions to electric resistance welding technology are not only significant but also integral to the modernization of steel tube manufacturing. With an enduring commitment to innovation and quality, his work continues to pave the way for advancements in production techniques, affirming his status as a leading inventor in his field.