Company Filing History:
8 out of 42,508 
1 out of 79 
Years Active: 1979-1996
Title: Kosho Ishizaki: Innovator in Magnetic Fluid Bearing Technology
Introduction
Kosho Ishizaki is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of motor technology, particularly through his innovative designs involving magnetic fluid bearings. With a total of 8 patents to his name, Ishizaki has established himself as a key figure in the advancement of motor efficiency and performance.
Latest Patents
One of Ishizaki's latest patents is the "Sealed Magnetic Fluid Bearing for Polygon Mirror Drive Motor." This invention features a motor equipped with a magnetic fluid bearing device designed to suppress vibration and irregular rotation. It also prevents the magnetic fluid from scattering from the bearing portion and the inside of the motor. The motor includes a rotor with a polygon mirror mounted on it, a stator unit with driving coils, and both a rotor position detector and a rotor revolution detector. Additionally, the magnetic fluid bearing unit incorporates a magnetic seal and a dynamic pressure seal, along with a magnetic bearing. A unique triple seal structure for the magnetic fluid is also provided, which consists of a first fluid seal from the bearing unit seals, a second fluid seal from a magnet of the rotor, and a third fluid seal from a magnet of the seal magnet.
Career Highlights
Throughout his career, Kosho Ishizaki has worked with notable companies such as Hitachi, Ltd. and Aisin Seiki Company, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in motor design.
Collaborations
Ishizaki has collaborated with esteemed colleagues, including Kunio Miyashita and Hiroshi Kimura. These partnerships have fostered an environment of innovation and creativity, leading to advancements in their respective fields.
Conclusion
Kosho Ishizaki's work in magnetic fluid bearing technology has significantly impacted motor design and efficiency. His numerous patents and collaborations highlight his dedication to innovation and excellence in engineering.