Location History:
- Kawasaki, JP (1998 - 2000)
- Kanagawa, JP (1991 - 2001)
Company Filing History:
Years Active: 1991-2001
Title: Seiji Yoneoka: Innovator in Magnetic Disk Technology
Introduction
Seiji Yoneoka is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 7 patents. His innovative designs have advanced the efficiency and functionality of magnetic disk drives.
Latest Patents
Yoneoka's latest patents include a magnetic disk drive with a floating head slider that features projections arranged to float at a greater distance from the magnetic disk than the slider's trailing end. This design incorporates a substrate with a transducer on its outflow end and a rail plane formed on surfaces near both sides of the substrate. The head slider also includes multiple projection elements on the rail plane, ensuring that when the slider floats over the magnetic disk, the distance between the projection elements and the disk is greater than that between the outflow end of the slider and the disk.
Another notable patent is for a head slider with a trapezoidal shape. This magnetic head slider includes a pair of rails on a disk opposing surface, each having a flat air bearing surface that generates a flying force during disk rotation. The design features a slit between the rails at their air inlet end portions and a groove that expands the compressed air to generate negative pressure. The trapezoidal shape allows for a narrower air inlet end compared to the air outlet end, optimizing performance.
Career Highlights
Seiji Yoneoka is currently associated with Fujitsu Corporation, where he continues to innovate in the field of magnetic disk technology. His work has been instrumental in enhancing the performance of magnetic storage devices, making them more efficient and reliable.
Collaborations
Yoneoka has collaborated with notable coworkers such as Yoshifumi Mizoshita and Yoshiharu Kasamatsu. Their combined expertise has contributed to the development of advanced technologies in the magnetic disk sector.
Conclusion
Seiji Yoneoka's contributions to magnetic disk technology through his innovative patents have significantly impacted the industry. His work at Fujitsu Corporation and collaborations with esteemed colleagues highlight his role as a leading inventor in this field.