Company Filing History:
2 out of 987 
1 out of 2,636 
Years Active: 2011-2014
Title: Chikako Sakagami: Innovator in Disk Drive Technology
Introduction
Chikako Sakagami is a prominent inventor based in Kanagawa, Japan. She has made significant contributions to the field of disk drive technology, holding a total of 3 patents. Her work focuses on servo control systems that enhance the performance and reliability of disk drives.
Latest Patents
Sakagami's latest patents include innovative designs for disk drives that improve servo control mechanisms. One of her notable inventions is a disk drive comprising a head for accessing a disk, an actuator for moving the head in the radial direction, and a controller. This controller is designed for servo control of the actuator based on servo data read out from the disk by the head. It maintains a width of the adaptive chasing notch filter below a specified value in servo system control and estimates the oscillation frequency of the actuator.
Another significant patent is for a disk drive that includes a head, an actuator, and a controller. The actuator supports the head and moves it using a voice-coil motor in a substantially radial direction. The controller performs servo control of the actuator by utilizing servo data read out by the head. It incorporates a plurality of notch filters with fixed center frequencies in the servo-control loop, enhancing the attenuation rate at designated frequencies.
Career Highlights
Chikako Sakagami has worked with notable companies in the technology sector, including HGST Netherlands B.V. and Hitachi Global Storage Technologies Netherlands B.V. Her experience in these organizations has allowed her to develop and refine her expertise in disk drive technology.
Collaborations
Throughout her career, Sakagami has collaborated with esteemed colleagues such as Kazuhisa Shishida and Isao Yoneda. These partnerships have contributed to her innovative work and advancements in the field.
Conclusion
Chikako Sakagami is a trailblazer in disk drive technology, with a focus on servo control systems that enhance performance. Her contributions through her patents and collaborations have significantly impacted the industry.