Company Filing History:
Years Active: 1987-1999
Title: Tohru Kira: Innovator in Magnetic Head Technology
Introduction
Tohru Kira is a prominent inventor based in Tenri, Japan. He has made significant contributions to the field of magnetic head technology, holding a total of 11 patents. His work has been instrumental in advancing the efficiency and effectiveness of magnetoresistive devices.
Latest Patents
Among his latest patents is a combined thin film magnetic head formed over a substrate trench. This innovative design includes a first yoke magnetic head and a second type MR head, with a front gap provided at the front end of the first yoke type MR head. The second yoke type MR head is positioned behind the first, allowing both heads to be formed on the same substrate through identical process steps. This advancement significantly reduces the number of manufacturing steps required. Another notable patent is the magnetoresistive effect device utilizing an oxide layer adjacent to one of the layers. This device is constructed by layering a nonmagnetic Co oxide film, a pinned magnetization layer made of Co, a nonmagnetic layer made of Cu, and a free magnetization layer made of NiFe on a substrate made of glass or silicon. The arrangement of the nonmagnetic Co oxide film in contact with the pinned magnetization layer enhances the device's saturation field and sensitivity.
Career Highlights
Tohru Kira is associated with Sharp Kabushiki Kaisha Corporation, where he has been able to apply his innovative ideas and research. His work has not only contributed to the company's advancements but has also influenced the broader field of magnetic technology.
Collaborations
Throughout his career, Kira has collaborated with notable colleagues such as Mitsuhiko Yoshikawa and Kazuyoshi Imae. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies.
Conclusion
Tohru Kira's contributions to magnetic head technology and magnetoresistive devices have established him as a key figure in his field. His innovative patents and collaborations continue to influence advancements in technology.