Hisano Yamamoto

Title: Hisano Yamamoto: Innovator in Magnetic Disk Technology

Introduction

Hisano Yamamoto is a prominent inventor based in Hachiouji, Japan. She has made significant contributions to the field of magnetic disk technology, holding a total of 5 patents. Her work has been instrumental in advancing the efficiency and performance of magnetic disk apparatuses.

Latest Patents

One of her latest patents is for a magnetic disk apparatus with a magnetic head that features upper and lower magnetic cores made from an electroplated thin film. This innovative apparatus includes a magnetic disk for recording information and a magnetic head that consists of a reproducing head and a recording head. The reproducing head is composed of a lower shield film, a magnetoresistive film, a pair of electrodes, and an upper shield. The recording head includes an upper magnetic core, a lower magnetic core, and a coil positioned between the two cores. Notably, the upper and lower magnetic cores are made from an electroplated thin film with an average crystal grain size smaller than 500 Å, utilizing a Ni–Fe alloy with specific weight percentages of nickel and iron.

Another significant patent involves a thin film magnetic head that also utilizes an electroplated Ni-Fe alloy thin film with a small average crystal grain size. This design features a slider with a thin film magnetic head that includes an upper magnetic core, a lower magnetic core, and a coil situated between them. The advancements in these patents highlight her expertise in materials science and engineering.

Career Highlights

Hisano Yamamoto has built a successful career at Hitachi, Ltd., where she has been able to apply her innovative ideas in practical applications. Her work has not only contributed to the company's success but has also positioned her as a leader in her field.

Collaborations

Throughout her career, she has collaborated with notable colleagues such as Masaaki Sano and Yoshiaki Kita. These partnerships have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies.

Conclusion

Hisano Yamamoto's contributions to magnetic disk technology exemplify her dedication to innovation and excellence. Her patents reflect her commitment to advancing the field and her impact on the industry is undeniable.