Kanagawa, Japan

Masakazu Sasaki

This inventor holds 12 USPTO granted patents. Top assignees: Hitachi Global Storage Technologies Netherlands B.v., International Business Machines Corporation, Hgst Netherlands, B.v.. Active years: 1993-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masakazu Sasaki. Retrieved from https://idiyas.com/inventor/masakazu-sasaki

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


% Patents Active = 50.0

Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 66(Granted Patents)


Location History:

  • Sagamihara, JP (1993)
  • Kanagawa-ken, JP (2001)
  • Kanagawa, JP (1997 - 2013)
  • Yamato, JP (1999 - 2016)

Company Filing History:


Years Active: 1993-2016

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12 patents (USPTO):Explore Patents

Title: Masakazu Sasaki: Innovator in Hard Disk Drive Technology

Introduction

Masakazu Sasaki, an accomplished inventor based in Kanagawa, Japan, has made significant contributions to the field of hard disk drive (HDD) technology. With an impressive portfolio of 12 patents, he focuses on developing innovative solutions to enhance the performance and reliability of data storage devices.

Latest Patents

Among his latest inventions is the "Hard disk drive low profile disk clamp to tied-shaft motor assembly." This patent describes a novel HDD design that features a low-profile disk clamp integrated with a tied-shaft spindle motor assembly. The design includes a clamping nut that is threaded onto a spindle sleeve, allowing a stationary shaft screw to penetrate through the HDD cover, providing a secure fit. Furthermore, the disk clamp contains a central opening, facilitating precise centering around the sleeve.

Another noteworthy patent is the "Load-unload ramp structure with cantilevered fin portion configured to reduce drop shock in a hard-disk drive." This innovative load-unload ramp structure is designed with a cantilevered fin portion that effectively mitigates drop shock. The structure consists of a primary load-unload ramp that lifts a head-slider away from the magnetic-recording disk, ensuring the protection of sensitive components during operation.

Career Highlights

Masakazu Sasaki has worked with prominent technology companies, including Hitachi Global Storage Technologies Netherlands B.V. and International Business Machines Corporation (IBM). His experience in these organizations has allowed him to apply his expertise in HDD innovations and collaborate with some of the best minds in the industry.

Collaborations

Throughout his career, Sasaki has had the opportunity to work closely with talented colleagues such as Takeshi Chawanya and Satoshi Hayakawa. Their collective efforts in the development of HDD technology have contributed to advancements that significantly improve data storage solutions.

Conclusion

Masakazu Sasaki stands out as an influential inventor in the realm of hard disk drive technology. His array of patents showcases his dedication to innovation and enhances the performance of HDDs. As the demand for efficient data storage solutions continues to grow, Sasaki's contributions are likely to play a crucial role in shaping the future of this technology.

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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