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For the Inventor, By the Inventor

Yokohama, Japan

Nobumasa Nishiyama

This inventor holds 33 USPTO granted patents, primarily in Hard Disk Drive Technology. Top assignees: Hitachi Global Storage Technologies Netherlands B.v., Hgst Netherlands, B.v., Western Digital Technologies, Inc.. Active years: 2006-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobumasa Nishiyama. Retrieved from https://idiyas.com/inventor/nobumasa-nishiyama

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

USPTO Granted Patents = 33

% Patents Active = 66.7

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 279(Granted Patents)


Location History:

  • Fujisawa, JP (2006 - 2017)
  • Kanagawa, JP (2008 - 2017)
  • Yokohama, JP (2008 - 2022)

Company Filing History:

goldMedal16 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
silverMedal9 out of 987 
 
Hgst Netherlands, B.v.
 patents
bronzeMedal6 out of 5,431 
 
Western Digital Technologies, Inc.
 patents
4. 2 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
5. 1 out of 1,234 
 
Nhk Spring Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2006-2022

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Areas of Expertise:
Hermetic Sealing
Flex Circuits
Magnetic Recording
Electrical Connectors
High-Speed Transmission
Signal Transfer
Head-Gimbal Assembly
Microactuator
Impedance Compensation
Disk Drive
Flying Height Adjustment
Crosstalk Reduction
33 patents (USPTO):Explore Patents
1. 11419213 - Multilayer flex circuit with non-plated outer metal layer (2022-08-16),
2. 10594100 - Flexible type electrical feed-through connector assembly (2020-03-17),
3. 10575424 - Hermetic sealed electrical connector with high-speed transmission for hard disk drive (2020-02-25),
4. 9870806 - Hermetic sealing with high-speed transmission for hard disk drive (2018-01-16),
5. 9841457 - Pseudo flexure for disk drive and method of testing electronic circuit for disk drive (2017-12-12),
6. 9704520 - Flex-HGA connector assembly for hard disk drive (2017-07-11),
7. 9570096 - Read path compensation for SNR and signal transfer (2017-02-14),
8. 9558790 - Hermetic sealing with high-speed transmission for hard disk drive (2017-01-31),
9. 9275664 - Shielded flex cable for use in a disk drive (2016-03-01),
10. 9165596 - Magnetic recording disk drive with multiple preamplifiers and common transmission line with impedance compensation (2015-10-20),
11. 9036306 - Grounding for a hard disk drive suspension tail (2015-05-19),
12. 9036305 - Magnetic recording disk drive with write driver to write head transmission line with multiple segments having different numbers of conductive traces (2015-05-19),
13. 8982502 - Hard disk drive with write assist based on detected conditions (2015-03-17),
14. 8675311 - Interleaved conductor structure with wrap around traces (2014-03-18),
15. 8598460 - Interleaved conductor structure with offset traces (2013-12-03),

Title: Innovator Spotlight: Nobumasa Nishiyama

Introduction:

Nobumasa Nishiyama, a prolific inventor based in Yokohama, Japan, has made significant contributions to the field of electrical engineering. With an impressive portfolio of 33 patents, Nishiyama continues to push the boundaries of innovation in the industry.

Latest Patents:

1. Multilayer Flex Circuit with Non-Plated Outer Metal Layer: Nishiyama's latest patent showcases a multilayer flex circuit design that features dual flex circuits with outer metal layers, base insulation layers, and inner metal layers. These circuits are interconnected through a coupling layer and an electrically conductive material, enabling versatile applications in electronic devices.

2. Flexible Type Electrical Feed-Through Connector Assembly: Another recent patent by Nishiyama introduces a flexible electrical feed-through design using a flexible printed circuit. This innovative assembly can be utilized in environments requiring a hermetically-sealed interface, such as data storage devices, enhancing connectivity and functionality.

Career Highlights:

Nishiyama has garnered professional experience at renowned companies like Hitachi Global Storage Technologies Netherlands B.V. and HGST Netherlands B.V., where he honed his skills and expertise in electrical engineering. His involvement in cutting-edge projects has led to the development of groundbreaking technologies in the industry.

Collaborations:

Throughout his career, Nishiyama has collaborated with esteemed coworkers such as John Thomas Contreras and Kazuhiro Nagaoka. These collaborations have fostered a culture of innovation and knowledge exchange, enabling Nishiyama to work on diverse projects and expand his impact in the field of electrical engineering.

Conclusion:

Nobumasa Nishiyama's dedication to innovation and his commitment to advancing technology have positioned him as a leading figure in the realm of electrical engineering. Through his inventive spirit and collaborative efforts, Nishiyama continues to drive progress and shape the future of the industry, leaving a lasting legacy of innovation and excellence.

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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