Koichi Kurosawa is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of engineering, particularly in the areas of laser technology and nuclear power. With a total of 15 patents to his name, Kurosawa has established himself as a leading figure in his industry.

Latest Patents

Kurosawa's latest patents include a laser welding apparatus, a preventive maintenance method for the reactor internal of a nuclear power plant, and a laser cutting apparatus. The laser welding apparatus features a welding head and a welding head scanning apparatus. It includes a collimate lens installed on the head body of the welding head, which is arranged opposite to the end face of optical fibers. The welding head is designed to be compact, utilizing only the collimate lens as a lens. A laser generated by a laser oscillator is introduced into the optical fiber, enters the collimate lens, and is converted into a parallel beam. This parallel beam is then irradiated onto the surface of the welding portion of the welding object, melting the surface. Additionally, metallic powder is jetted from powder feed paths formed in the head body to the melted portion, allowing for build-up welding on the surface.

Another notable patent is the method of repairing shroud support and the associated repair apparatus. This invention involves a shroud support of a boiling water reactor (BWR), which includes a shroud support cylinder and shroud support legs welded to the bottom of a reactor pressure vessel (RPV). The design incorporates a support apparatus that is set to the control rod drive (CRD) housings installed at the bottom of the RPV. A rail guide member is horizontally set to the support apparatus, allowing a repair device to be pushed out along the rail guide member toward the RPV.

Career Highlights

Throughout his career, Koichi Kurosawa has worked with notable companies such as Hitachi, Ltd. and Hitachi-GE Nuclear Energy, Ltd. His work has significantly impacted the development of advanced technologies in the nuclear energy sector.

Collaborations

Kurosawa has collaborated with esteemed colleagues, including Kunio Enomoto and Ren Morinaka. Their combined expertise has contributed to the success of various projects and innovations in their field.

Conclusion

Koichi Kurosawa's contributions to laser technology

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