Yokohama, Japan

Masayoshi Amasaka

This inventor holds 2 USPTO granted patents. Top assignees: Fujitsu Corporation, Hitachi, Ltd., Nippon Telegraph and Telephone Public Corporation. Active years: 1978-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayoshi Amasaka. Retrieved from https://idiyas.com/inventor/masayoshi-amasaka

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 27(Granted Patents)


Location History:

  • Yokohama, JP (1978)
  • Kawasaki, JP (2003)

Company Filing History:


Years Active: 1978-2003

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2 patents (USPTO):Explore Patents

Title: Masayoshi Amasaka: Magnetic Storage and Head-Support Inventions.

Introduction

Masayoshi Amasaka is an inventor associated with Yokohama, Japan. His patent work addresses magnetic storage devices and the support and operation of floating magnetic heads. He is credited with 2 patents.

Latest Patents

Magnetic Storage Device Having a Head Suspension. This invention describes a ramp-loading magnetic storage device designed to keep a magnetic head slider stable as it loads onto or unloads from a storage medium. A loading member connected to the gimbal helps position the slider so its flow-in end remains farther from the medium than its flow-out end, reducing unstable flight.

Air Bearing Head Support. This invention describes a sequence for starting and stopping a magnetic disk drive. At startup, the head contacts the disk before rotation lifts it into a floating position. At shutdown, the head is moved away from the rotating disk before the disk stops. The approach is intended to prevent sticking caused by dew condensation, support a smaller floating space, and enable higher recording density.

Career Highlights

Amasaka’s listed company affiliations include Fujitsu Corporation and Nippon Telegraph and Telephone Public Corporation. His patent subjects reflect work on magnetic recording hardware and the reliable operation of disk-drive heads.

Collaborations

His listed coworkers include Shigemitsu Oguchi and Hatsuo Takahashi.

Conclusion

Masayoshi Amasaka’s patents focus on stabilizing magnetic-head movement and improving the operation of magnetic storage devices.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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