Company Filing History:
10 out of 42,508 
4 out of 162 Years Active: 1982-1994
Title: Hiromasa Hirakawa: Innovator in Nuclear Reactor Technology
Introduction
Hiromasa Hirakawa is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of nuclear reactor technology, holding a total of 10 patents. His innovative approaches have advanced the methods used in the fabrication of critical components for nuclear reactors.
Latest Patents
Hirakawa's latest patents include a method of fabricating a channel box or other parts for a nuclear reactor. This method involves forming Zr-alloy sheet material into a tubular channel box, which undergoes solution heat treatment followed by a non-stressing thinning process. This innovative approach retains the corrosion resistance imparted by heat treatment while allowing for easier processing of uniform thickness materials. Another notable patent is for a fuel assembly that utilizes highly corrosion-resistant, Fe–Ni, zirconium-based alloy components, designed to achieve an average discharge burnup level of 50 to 550 GWd/t.
Career Highlights
Throughout his career, Hiromasa Hirakawa has worked with notable companies such as Hitachi, Ltd. and Hitachi Engineering Co., Ltd. His work has been instrumental in enhancing the safety and efficiency of nuclear reactor components.
Collaborations
Hirakawa has collaborated with esteemed colleagues, including Hideaki Ishizaki and Junjiro Nakajima. Their combined expertise has contributed to the successful development of innovative technologies in the nuclear sector.
Conclusion
Hiromasa Hirakawa's contributions to nuclear reactor technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in nuclear safety and efficiency.