Company Filing History:
6 out of 259 
1 out of 1 
1 out of 1,311 
Years Active: 2003-2018
Title: Keita Isogai: Innovator in Magnetic Materials
Introduction
Keita Isogai is a prominent inventor based in Sendai, Japan. He has made significant contributions to the field of magnetic materials, holding a total of eight patents. His innovative work focuses on improving the properties and production methods of magnetic materials.
Latest Patents
One of Isogai's latest patents is related to a magnetic material and a method for producing it. This invention involves an internal structure of a magnetic material that is phase-separated into at least a first phase and a second phase. At least one of these phases includes a compound with a perovskite structure, which enhances the magnetic properties, such as coercive force. Notably, this magnetic material can achieve corrosion resistance without the inclusion of rare-earth elements.
Another significant patent is for a magnetically biasing bond magnet designed to improve the DC superposition characteristics of magnetic coils. This bond magnet comprises magnetic powder and plastic resin, with a resin content of 20% or more by volumetric ratio. The magnetic powder used is rare-earth magnetic powder with an intrinsic coercive force of 5 kOe or more and a Curie point of 300°C or more. This innovation allows for the creation of a thin magnet with a thickness of 500 μm or less, suitable for small-sized inductance parts.
Career Highlights
Throughout his career, Isogai has worked with notable companies, including NEC Tokin Corporation. His experience in these organizations has contributed to his expertise in the field of magnetic materials and their applications.
Collaborations
Isogai has collaborated with esteemed colleagues such as Teruhiko Fujiwara and Masayoshi Ishii. These partnerships have further enriched his work and innovations in magnetic materials.
Conclusion
Keita Isogai is a distinguished inventor whose work in magnetic materials has led to significant advancements in the field. His patents reflect a commitment to innovation and improvement in magnetic properties and production methods.