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For the Inventor, By the Inventor

Kanagawa, Japan

Hiroaki Nemoto

This inventor holds 27 USPTO granted patents and 1 published patent application, primarily in Magnetic Recording Technology. Top assignees: Hitachi, Ltd., Hgst Netherlands, B.v., Hitachi Global Storage Technologies Japan, Ltd.. Active years: 1999-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Nemoto. Retrieved from https://idiyas.com/inventor/hiroaki-nemoto

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

Calculating rank
USPTO Granted Patents = 27 

% Patents Active = 48.1

Average Co-Inventor Count = 3.1

ph-index = 7

Forward Citations = 107(Granted Patents)


Location History:

  • Oiso, JP (2005 - 2009)
  • Olso, JP (2009)
  • Kokubunji, JP (1999 - 2011)
  • Kanagawa, JP (2008 - 2015)
  • Odawara, JP (2012 - 2016)

Company Filing History:

goldMedal14 out of 42,760 
 
Hitachi, Ltd.
 patents
silverMedal5 out of 987 
 
Hgst Netherlands, B.v.
 patents
bronzeMedal4 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
4. 4 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
5. 1 out of 1,112 
 
Hitachi Maxell, Limited
 patents
where one patent can have more than one assignee

Years Active: 1999-2016

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Areas of Expertise:
Microwave-Assisted Recording
Magnetic Storage Apparatus
Thermal Energy Assistance
Perpendicular Magnetic Recording
FePt Alloy Layers
Magnetization Reversal Field
Magneto-Optical Recording
Optical Magnetic Medium
Magnetic Head Production
Information Reproducing Device
High Resolution Detection
27 patents (USPTO):Explore Patents
1. 9406327 - Granular media with a high-Hk assist layer for microwave-assisted magnetic recording (2016-08-02),
2. 9117477 - Perpendicular magnetic recording media having novel seed layer (2015-08-25),
3. 9099140 - Thermal energy assisted medium (2015-08-04),
4. 8771849 - Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same (2014-07-08),
5. 8709618 - Magnetic storage apparatus (2014-04-29),
6. 8679654 - Magnetic recording medium including plural FePt alloy layers including carbon, oxides or nitrides (2014-03-25),
7. 8298688 - [object Object] (2012-10-30),
8. 8169728 - Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof (2012-05-01),
9. 8089829 - Thermally assisted recording media and system (2012-01-03),
10. 8059497 - Megneto-optical recording device capable of changing the shapes of heating areas (2011-11-15),
11. 7701667 - Perpendicular magnetic recording medium and magnetic storage apparatus using the same (2010-04-20),
12. 7688685 - Magneto-optical recording device capable of changing the shapes of heating areas (2010-03-30),
13. 7625646 - Perpendicular magnetic recording medium and method of manufacturing it (2009-12-01),
14. 7510789 - Perpendicular magnetic recording media (2009-03-31),
15. 7457064 - Perpendicular magnetic recording medium, method of evaluating magnetic properties of the same (2008-11-25),

Title: The Innovative Contributions of Hiroaki Nemoto in Magnetic Recording Technology

Introduction

Hiroaki Nemoto, a prominent inventor based in Kanagawa, Japan, has made significant contributions to the field of magnetic recording technology. With a remarkable portfolio of 27 patents, Nemoto’s work exemplifies innovation in enhancing the performance and efficiency of magnetic storage devices.

Latest Patents

Among his latest patents is a pioneering development in granular media featuring a high-Hk assist layer for microwave-assisted magnetic recording. This innovation involves a magnetic storage device that integrates a microwave-assisted magnetic recording (MAMR) head with a spin torque oscillator (STO), and a carefully structured magnetic recording medium. The technology aims to improve data storage capabilities by optimizing the arrangement of the recording and assist layers.

Another notable patent focuses on perpendicular magnetic recording media with a novel seed layer that enhances magnetic properties. This magnetic medium utilizes a seed layer comprised of elements such as Chromium (Cr), Cobalt (Co), Iron (Fe), and Nickel (Ni), which significantly improves the overall performance of recording data in a perpendicular format.

Career Highlights

Nemoto has had a distinguished career, having worked for prominent companies such as Hitachi, Ltd. and HGST Netherlands B.V. His tenure at these firms has not only contributed to his extensive patent portfolio but has also positioned him as a leading figure in magnetic recording research and development.

Collaborations

Throughout his career, Hiroaki Nemoto has collaborated with several esteemed colleagues, including Ikuko Takekuma and Hiroyuki Nakagawa. These collaborations have further advanced the innovation of magnetic storage technologies, allowing for the exchange of ideas and the synergy of expertise.

Conclusion

Hiroaki Nemoto’s innovative spirit and dedication to enhancing magnetic recording technologies have established him as a key inventor in this domain. With his continued work and success in patenting groundbreaking technologies, he remains a pivotal figure in the evolution of data storage solutions. As the industry progresses, the impact of his contributions will undoubtedly influence future advancements in magnetic recording systems.

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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