Masayuki Doi

Title: Masayuki Doi: Innovator in Cooling Technology and Friction Stir Welding

Introduction

Masayuki Doi is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the fields of cooling technology and friction stir welding, holding a total of six patents. His innovative work has advanced manufacturing methods and improved the efficiency of various industrial processes.

Latest Patents

Doi's latest patents include a cooling plate and its manufacturing method, as well as a sputtering target and its manufacturing method. The cooling plate features a groove that serves as a passage for coolant, with fins integrated within the groove. The design includes a lid that is wider than the groove, which is joined to the body through friction stir welding. This method ensures that the weld bead is positioned outside the coolant passage, enhancing the cooling plate's functionality. Additionally, Doi's friction stir welding apparatus and method are designed to minimize the impact of workpiece deformations during processing. This innovation allows for precise joining of materials while maintaining control over the operational parameters.

Career Highlights

Throughout his career, Masayuki Doi has worked with notable companies, including Hitachi, Ltd. and the Zaidanhouzin Kasenzyouho-senta. His experience in these organizations has contributed to his expertise in advanced manufacturing techniques and welding technologies.

Collaborations

Doi has collaborated with esteemed colleagues such as Kazutaka Okamoto and Hisanori Okamura. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Masayuki Doi's contributions to cooling technology and friction stir welding have established him as a key figure in his field. His patents reflect a commitment to innovation and excellence in manufacturing processes.