Company Filing History:
Years Active: 1981-1986
Title: The Innovations of Masahide Suenaga
Introduction
Masahide Suenaga is a prominent inventor based in Odawara, Japan. He has made significant contributions to the field of magnet technology, holding a total of 7 patents. His work has advanced the development of thin-film permanent magnets and magnetoresistive heads, which are crucial in various technological applications.
Latest Patents
One of Suenaga's latest patents is for a thin-film permanent magnet and the method of producing it. This innovative magnet is made from a Co-Pt alloy containing 5-35 atomic-% of Pt. It can be produced using a sputtering method that achieves an ultimate pressure of 5×10^-7 to 1×10^-4 Torr before introducing the sputtering gas. Remarkably, this magnet exhibits a coercivity of up to 2,000 Oe and a remanence ranging from about 8,000 to 18,000 G without requiring any heat treatment. Another notable patent is for a magnetoresistive head, which includes a magnetoresistive element that detects changes in resistance as it moves relative to a magnetic recording medium. This design features protrusions at the ends of the element, which help suppress the formation of undesirable domain walls, ensuring stable output voltage levels and reduced Barkhausen noise.
Career Highlights
Masahide Suenaga is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to focus on developing advanced magnetic technologies that have applications in various electronic devices.
Collaborations
Suenaga has collaborated with notable coworkers, including Noboru Shimizu and Yukihisa Tsukada. Their combined expertise has contributed to the successful development of innovative technologies in the field of magnetism.
Conclusion
Masahide Suenaga's contributions to the field of magnet technology through his patents and collaborations have significantly impacted the industry. His innovative work continues to pave the way for advancements in electronic devices and magnetic applications.
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