Location History:
- Kisarazu, JP (1981)
- Kimitsu, JP (1984)
Company Filing History:
Years Active: 1981-1984
Title: The Innovations of Toshio Hirokawa
Introduction
Toshio Hirokawa is a notable inventor based in Kisarazu, Japan. He has made significant contributions to the field of manufacturing, particularly in the production of spiral pipes and heavy wall pipes. With a total of 2 patents to his name, Hirokawa's work has had a lasting impact on the industry.
Latest Patents
Hirokawa's latest patents include a "Method and apparatus for manufacturing spiral pipe." This innovative method involves determining a maximum curvature for a strip of pipe forming material, ensuring that a desired residual moment is imparted to the finished pipe. The process includes adjusting the position of forming rolls to continuously bend the strip into a spiral, allowing it to spring back to the desired diameter before welding the seam. Another significant patent is the "Process for fabricating heavy wall pipe," which involves press-fabricating rolled steel plates into cylindrical UO pipes. This process utilizes a collapsible U-ing punch to ensure the desired butt gap is achieved during fabrication.
Career Highlights
Hirokawa is currently employed at Nippon Steel Corporation, where he continues to innovate and improve manufacturing processes. His expertise in pipe manufacturing has positioned him as a key figure in the industry.
Collaborations
Throughout his career, Hirokawa has collaborated with talented coworkers such as Tsuyoshi Kawano and Matsuo Usuda. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.
Conclusion
Toshio Hirokawa's contributions to the manufacturing industry through his patents and collaborative efforts highlight his importance as an inventor. His work continues to influence the production of pipes, showcasing the value of innovation in engineering.