Yukihisa Tsukada

Title: Innovations by Yukihisa Tsukada

Introduction

Yukihisa Tsukada is a notable inventor based in Odawara, Japan. He has made significant contributions to the field of magnetic head technology, holding a total of 5 patents. His work has been instrumental in advancing the efficiency and performance of magnetic heads used in various applications.

Latest Patents

One of his latest patents is titled "Magnetic head closure having ferrite substrate and closure." This invention features a ferrite substrate with a first recess designed for depositing a conductive coil. The ferrite closure includes a second recess that encloses part of the conductive coil, which is essential for signal transducing. The design allows for the first recess to be formed without affecting magnetic transducing efficiency, utilizing techniques such as photolithography or reactive ion etching. The second recess, which influences magnetic transducing efficiency, can be precisely machined without requiring advanced process control.

Another significant patent is the "Method of manufacturing a thin-film magnetic head." This method involves forming a first magnetic layer on a non-magnetic substrate, followed by a gap layer and a conductor coil covered with an insulation layer. A second magnetic layer is then formed, creating a magnetic gap between the first and second layers at the front portion facing a recording medium. The process includes dry etching to shape the layers, resulting in a high-performance thin-film magnetic head.

Career Highlights

Yukihisa Tsukada is currently employed at Hitachi, Ltd., where he continues to innovate in the field of magnetic technology. His work has contributed to the development of advanced magnetic heads that are crucial for data storage and retrieval.

Collaborations

He has collaborated with notable colleagues such as Masahide Suenaga and Hiroshi Yamamoto, further enhancing the impact of his inventions through teamwork and shared expertise.

Conclusion

Yukihisa Tsukada's contributions to magnetic head technology exemplify the importance of innovation in the field. His patents reflect a commitment to improving efficiency and performance, making a lasting impact on the industry.