Hironobu Matsuzawa

This inventor holds 17 USPTO granted patents and 1 published patent application, primarily in Magnetoresistive Devices. Top assignee: Tdk Corporation. Active years: 2011-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironobu Matsuzawa. Retrieved from https://idiyas.com/inventor/hironobu-matsuzawa

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

Calculating rank

USPTO Granted Patents = 17 (Patent Applications = 1)

% Patents Active = 94.1

Average Co-Inventor Count = 3.8

ph-index = 4

Forward Citations = 77(Granted Patents)

Company Filing History:

17 out of 8,282

Tdk Corporation

patents

Years Active: 2011-2017

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Areas of Expertise:

Magnetoresistance

Magnetic Recording

Spin Torque Oscillator

Gallium Oxide

Ferromagnetic Layer

Magnetic Disk

Head Gimbal Assembly

CPP Structure

Magnetic Head

Thin Central Portion

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9824701 - Microwave assisted magnetic recording head with spin torque oscillator corner angle relationship, head gimbal assembly, and magnetic recording device (2017-11-21),

2. 8970995 - Magnetoresistance effect element having layer containing Zn at the interface between magnetic layer and non-magnetic intermediate layer (2015-03-03),

3. 8593766 - Magneto-resistive effect element having spacer layer including main spacer layer containing gallium oxide and metal intermediate layer (2013-11-26),

4. 8564911 - Magneto-resistive effect element having spacer layer including gallium oxide layer with metal element (2013-10-22),

5. 8498083 - Magneto-resistive effect element having spacer layer containing gallium oxide, partially oxidized copper (2013-07-30),

6. 8441763 - Magneto-resistive effect element having spacer layer with thin central portion (2013-05-14),

7. 8432645 - Magneto-resistive effect element, magnetic head, magnetic head slider, head gimbal assembly and hard disk drive apparatus (2013-04-30),

8. 8405935 - Magneto-resistive effect element having spacer layer including main spacer layer containing gallium oxide and nonmagnetic layer (2013-03-26),

9. 8379350 - CPP-type magnetoresistive element including spacer layer (2013-02-19),

10. 8345390 - Magnetoresistive effect element in CPP-type structure and magnetic disk device (2013-01-01),

11. 8331063 - Magnetoresistive effect element in CPP-type structure and magnetic disk device (2012-12-11),

12. 8274764 - Magneto-resistive effect element provided with GaN spacer layer (2012-09-25),

13. 8194364 - Magnetoresistive effect element in CPP-type structure including ferromagnetic layer configured with CoFe system alloy and magnetic disk device therewith (2012-06-05),

14. 8147994 - Layered structure having FePt system magnetic layer and magnetoresistive effect element using the same (2012-04-03),

15. 8031444 - Magnetoresistive device of the CPP type, and magnetic disk system (2011-10-04),

Title: Hironobu Matsuzawa: Innovator in Magnetic Recording Technology

Introduction

Hironobu Matsuzawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic recording technology, holding a total of 17 patents. His work has advanced the capabilities of magnetic recording devices, making them more efficient and effective.

Latest Patents

Matsuzawa's latest patents include a microwave-assisted magnetic recording head with a spin torque oscillator corner angle relationship. This innovative design features a main magnetic pole, a trailing shield, and a spin torque oscillator positioned between them. The unique angles formed by the surfaces of the oscillator enhance its performance. Another notable patent involves a magnetoresistance effect element that incorporates a layer containing zinc at the interface between the magnetic layer and the non-magnetic intermediate layer. This design improves the functionality of thin film magnetic heads, allowing for better responsiveness to external magnetic fields.

Career Highlights

Matsuzawa has dedicated his career to advancing magnetic recording technologies. His work at TDK Corporation has positioned him as a key player in the industry. His inventions have not only contributed to the company's success but have also influenced the broader field of data storage and retrieval.

Collaborations

Matsuzawa has collaborated with notable colleagues such as Tsutomu Chou and Yoshihiro Tsuchiya. These partnerships have fostered innovation and have led to the development of groundbreaking technologies in magnetic recording.

Conclusion

Hironobu Matsuzawa's contributions to magnetic recording technology are significant and impactful. His innovative patents and collaborations have advanced the field, making him a respected figure in the industry. His work continues to influence the future of data storage solutions.

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]

1 patent pending: