Company Filing History:
4 out of 1,256 
1 out of 15 
1 out of 832,912 Years Active: 1988-2002
Title: Masahiro Kagawa: Innovator in Steel Pipe Technology
Introduction
Masahiro Kagawa is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of steel pipe technology, holding a total of 5 patents. His innovative methods have improved the production processes of steel pipes, particularly in smoothing welded seams.
Latest Patents
Kagawa's latest patents include a "Method for smoothing steel pipe seam portion" and an "Apparatus and method for smoothing a welded seam of steel pipe." Both inventions focus on enhancing the quality of thick-walled portions of steel pipes produced by pressure-welding. The method involves preforming the longitudinal edges of an open pipe before induction heating, followed by the use of outer and inner reduction rollers to smooth the thick-walled portion. The apparatus features a support for the inner reduction roller, which includes a water passage for cooling, ensuring optimal performance during the smoothing process.
Career Highlights
Throughout his career, Kagawa has worked with prominent companies, including Kawasaki Steel Corporation. His experience in the industry has allowed him to develop and refine his innovative techniques, contributing to advancements in steel manufacturing.
Collaborations
Kagawa has collaborated with notable coworkers such as Kingo Sawada and Toshio Ohnishi. Their combined expertise has fostered a productive environment for innovation in steel pipe technology.
Conclusion
Masahiro Kagawa's contributions to the field of steel pipe technology through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the industry, ensuring the production of high-quality steel pipes.