This inventor holds 2 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignees: Nhk Spring Co., Ltd., Shinko Metal Products Co., Ltd.. Active years: 2016-2018.
Company Filing History:
2 out of 1,234 
2 out of 7 Years Active: 2016-2018
Title: Koji Iwaya: Innovator in Seamless Steel Pipe Technology
Introduction
Koji Iwaya is a notable inventor based in Kitakyushu, Japan. He has made significant contributions to the field of seamless steel pipe technology, holding a total of 2 patents. His work focuses on the development of hollow springs utilizing seamless steel pipes, showcasing his expertise in materials engineering.
Latest Patents
Iwaya's latest patents include innovative methods for producing seamless steel pipes and hollow springs. One of his patents describes a seamless steel pipe formed from a cylindrical steel material billet through a hot isostatic extrusion step. This patent emphasizes the importance of minimizing flaws on the inner and outer surfaces of the steel pipe to a depth of 50 micrometers or less. Additionally, he has developed a hollow spring obtained by forming a hollow body in the shape of a coil or bar from the seamless steel pipe made of spring steel. This hollow body undergoes a surface treatment to ensure it has compressive residual stress. The method for producing seamless steel pipes includes several steps, such as billet molding, heating, extrusion, and pickling.
Career Highlights
Throughout his career, Koji Iwaya has worked with prominent companies in the industry, including NHK Spring Co., Ltd. and Shinko Metal Products Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in steel manufacturing.
Collaborations
Iwaya has collaborated with notable colleagues such as Tomoyuki Minami and Noritoshi Takamura. These partnerships have likely enhanced his innovative capabilities and led to the successful development of his patents.
Conclusion
Koji Iwaya's contributions to seamless steel pipe technology and his innovative patents demonstrate his significant impact on the industry. His work continues to influence advancements in materials engineering and manufacturing processes.