This inventor holds 15 USPTO granted patents, primarily in Magnetoresistance Technology. Top assignees: Nec Corporation, Matsushita Electric Industrial Co., Ltd., Nippon Steel Corporation. Active years: 1994-2000.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kobe, JP (1994 - 1996)
- Tokyo, JP (1997 - 2000)
Company Filing History:
15 out of 36,735 
3 out of 27,375 
3 out of 3,724 
Years Active: 1994-2000
Areas of Expertise:
Title: The Innovations of Hidefumi Yamamoto: A Pioneer in Magnetoresistive Technology
Introduction
Hidefumi Yamamoto is a renowned inventor based in Tokyo, Japan, known for his significant contributions to the field of magnetoresistive technology. With an impressive portfolio of 15 patents, his inventions have played a crucial role in advancing the understanding and applications of magnetoresistive effects in various electronic devices.
Latest Patents
Among his latest patents, one notable invention is the "Magnetoresistive effect element having magnetoresistive layer". In this patent, an underlying metal layer is formed on a substrate, with a magnetoresistive layer situated on top. The precise thickness of the underlying metal layer is meticulously controlled, ranging from about 0.1 to 3.0 nm. Another significant patent is for a "Magnetoresistance effects film", which defines a film structure that includes at least two thin magnetic films, interposed with a thin nonmagnetic film and a thin antiferromagnetic film. This innovative structure allows for a large linear change in resistance while maintaining low hysteresis, even under small external magnetic fields, making it a valuable addition to the field of magnetic materials.
Career Highlights
Throughout his career, Hidefumi Yamamoto has made substantial strides in his field while working for prestigious companies such as NEC Corporation and Ube Industries, Inc. His extensive experience across various sectors of the technology industry has not only honed his skills but also contributed to the collaborative nature of innovative research.
Collaborations
Yamamoto's work has also involved fruitful collaborations with esteemed colleagues like Kazuhiko Hayashi and Kunihiko Ishihara. Collaborating with such talented researchers has significantly enhanced the scope and impact of his inventions, pushing the boundaries of what is possible in magnetoresistive technologies.
Conclusion
In summary, Hidefumi Yamamoto stands out as a pivotal figure in the realm of electrical engineering, particularly through his innovative inventions related to magnetoresistive effects. With a solid foundation of patents and collaborations, his work continues to influence advancements in electronic devices and materials, solidifying his legacy as an influential inventor in Tokyo, Japan.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile