Location History:
- Komagane, JP (1991 - 1995)
- Nagano, JP (1995 - 2000)
Company Filing History:
7 out of 307 
5 out of 264 Years Active: 1991-2000
Title: Koichi Katakura: Innovator in Spindle Motor Technology
Introduction
Koichi Katakura is a prominent inventor based in Nagano, Japan. He holds a total of 12 patents, showcasing his significant contributions to the field of engineering and technology. His work primarily focuses on spindle motors and disk driving devices, which are essential components in various electronic devices.
Latest Patents
One of Katakura's latest patents is for a spindle motor. This innovative spindle motor comprises a fixed journal, a hub for loading disks, a ball bearing for rotatably supporting the hub, and an annular member fixed on either the fixed journal or the hub. The design of the fixed annular member is configured to create a small space with the hub or fixed journal, which is opposite the one on which the annular member is fixed. The patent also details the dimensions of the spaces between the top and bottom disks and includes grooves in the annular member for generating airflow directed toward the space of longer dimension.
Another notable patent is for a disk driving device with a hub flange secured between a yoke and a drive magnet. This device includes a hub that rotatably supports a disk with the aid of bearings. The yoke is fixedly secured to the hub, allowing it to turn together with the hub. The design features a bent portion in the yoke and a flange on the hub that protrudes below and outwardly from the disk mounting portion. This flange is fixedly held between the inner surface of the bent portion of the yoke and the upper end face of the drive magnet unit.
Career Highlights
Throughout his career, Koichi Katakura has worked with notable companies, including Kabushiki Kaisha Sankyo Seiki Seisakusho and Sankyo Seiki Mfg. Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Katakura has collaborated with several professionals in his field, including Yutaka Ishizuka and Sadayoshi Mineta. These collaborations have likely enhanced his work and led to further advancements in technology.
Conclusion
Koichi Katakura is a distinguished inventor whose work in spindle motors and disk driving devices has made a significant impact in the engineering field. His numerous patents reflect his innovative spirit and dedication to advancing technology.