Chiyoda, Japan

Takenori Atsumi

This inventor holds 15 USPTO granted patents and 1 published patent application, primarily in Magnetic Disk Drives. Top assignees: Hitachi Global Storage Technologies Japan, Ltd., Hitachi Global Storage Technologies Netherlands B.v., Hitachi, Ltd.. Active years: 2004-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takenori Atsumi. Retrieved from https://idiyas.com/inventor/takenori-atsumi

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

Calculating rank
USPTO Granted Patents = 15 

% Patents Active = 20.0

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 42(Granted Patents)


Location History:

  • Ushiku, JP (2004 - 2005)
  • Chiyoda, JP (2005 - 2009)
  • Ibaraki-ken, JP (2011)
  • Ibaraki, JP (2007 - 2013)
  • Yamato, JP (2013 - 2015)

Company Filing History:


Years Active: 2004-2015

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Areas of Expertise:
Hard Disk Drive
Actuator Assembly
Voice Coil Motor
Fly Height Adjustment
Positioning Control
Magnetic Head
Feedback Control
Carriage Arm Assembly
Servo Control
Disk Device
Magnetic Disk Apparatus
Positioning Accuracy
15 patents (USPTO):Explore Patents

Title: Innovations of Takenori Atsumi: A Pioneer in Hard Disk Drive Technology

Introduction

Takenori Atsumi, an accomplished inventor based in Chiyoda, Japan, has made significant contributions to the field of hard disk drive technology, holding an impressive portfolio of 15 patents. His innovative work has advanced the functionality and reliability of data storage devices, paving the way for improved performance in digital technology.

Latest Patents

Among Atsumi's notable inventions is a patent for a hard disk drive actuator assembly featuring an interleaved voice coil motor. This design strategically positions the voice coil between the pivot bearing and the actuator arm, allowing for a longer pivot-to-head dimension. This adjustment effectively reduces the radius of curvature of the arc that the head slider traverses over the disk, minimizing skew angles of the read-write head in relation to the disk tracks.

Additionally, Atsumi has developed a hard disk drive equipped with a fly-height-adjustment heating element and a position-adjustment heating element. This innovative design enables the head-slider to maintain precise proximity to the recording surface of the magnetic-recording disk. The fly-height variation compensator generates signals that compensate for changes in the fly height of the write element, enhancing the performance and reliability of data writing processes.

Career Highlights

Throughout his career, Takenori Atsumi has worked with esteemed companies, including Hitachi Global Storage Technologies in both the Netherlands and Japan. His tenure at these organizations has allowed him to play a pivotal role in revolutionizing hardware designs that directly impact data storage technology.

Collaborations

Atsumi has collaborated with talented professionals in his field, notably Toshihiko Shimizu and Tetsuya Hamaguchi. These collaborations have resulted in innovative advancements and further enhancement of hard disk drive technologies, fostering a collaborative environment for groundbreaking inventions.

Conclusion

Takenori Atsumi stands out as a remarkable inventor whose work in hard disk drive technologies has greatly influenced the industry. With a strong portfolio of patents and a collaborative spirit, he continues to drive the innovation that shapes the future of data storage. His legacy of innovation will undoubtedly inspire future generations of inventors in 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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