Koji Kaiso

Title: Koji Kaiso: Inventor in Magnetic Particle Separation

Introduction

Koji Kaiso is an inventor associated with Yamaguchi, Japan. His patent work includes methods and apparatuses for separating mixtures of particles with different magnetic susceptibilities. He is credited with 5 patents.

Latest Patents

Kaiso’s recent patent work addresses magnetic separation techniques designed to distinguish particle types.

In “Method and Apparatus for Separation of Mixture,” a gradient magnetic field is applied to a paramagnetic supporting liquid containing two types of particles. The first particles have lower magnetic susceptibility than the liquid and float through the magneto-Archimedes effect. A horizontal magnetic force moves them away from a magnetic filter, where they are gathered. The filter captures the second particles, whose magnetic susceptibility is higher than that of the liquid.

Another “Method and Apparatus for Separation of Mixture” describes separating particles through countercurrent classification in an inverted-conical or pyramidal tube. The particles have different magnetic susceptibilities and are held in the tube while fluid flows upward. A gradient magnetic field with a vertical component is applied to help separate the particle types, including in cases where their densities and diameters differ only slightly.

Career Highlights

Kaiso’s listed organizational affiliations include Ube Industries, Inc. and Osaka University. His patent work reflects an application of magnetic-field control to particle separation.

Collaborations

Toshihiro Shimakawa and Shigehiro Nishijima are identified as Kaiso’s coworkers.

Conclusion

Koji Kaiso’s inventions focus on magnetic separation methods that use particle susceptibility, fluid flow, and magnetic-field gradients to distinguish mixtures.