Location History:
- Hiroshima, JP (1991 - 2004)
- Cupertino, CA (US) (2004)
Company Filing History:
Years Active: 1991-2004
Title: Kousaku Tamari: Innovator in Magnetic Recording Technology
Introduction
Kousaku Tamari is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the field of magnetic recording technology, holding a total of 16 patents. His work focuses on developing advanced magnetic recording media that exhibit superior performance characteristics.
Latest Patents
One of his latest patents is for a magnetic recording medium and process for producing the same. This invention features a magnetic recording medium that demonstrates a high coercive force and excellent squareness. It consists of a substrate, an underlayer formed on the substrate, and a spinel-type iron oxide thin film with maghemite as the main component. The thin film has a thickness ranging from 5 to 50 nm and is composed of grains with an average size of 5 to 30 nm. The invention achieves a coercive force of not less than 159 kA/m (2,000 Oe) and a coercive squareness ratio S* of at least 0.5:1 in longitudinal recording media, or a squareness ratio of not less than 0.75:1 in perpendicular recording media. Another notable patent involves a magnetic recording medium that includes a substrate and a maghemite thin film with a surface roughness represented by a center line mean roughness Ra of 0.1 to 1.0 nm. This medium exhibits excellent magnetic properties, particularly in coercive force squareness S* value and enhanced surface smoothness.
Career Highlights
Kousaku Tamari is currently associated with Toda Kogyo Corporation, where he continues to innovate in the field of magnetic materials. His work has been instrumental in advancing the technology used in data storage solutions.
Collaborations
Throughout his career, Tamari has collaborated with notable colleagues, including Takanori Doi and Kenichi Nakata. These collaborations have contributed to the development of cutting-edge technologies in magnetic recording.
Conclusion
Kousaku Tamari's contributions to magnetic recording technology have established him as a key figure in the field. His innovative patents and ongoing work at Toda Kogyo Corporation continue to influence advancements in data storage solutions.
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