Masaya Sakaguchi

This inventor holds 17 USPTO granted patents, primarily in Magnetic Recording Technology. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1994-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaya Sakaguchi. Retrieved from https://idiyas.com/inventor/masaya-sakaguchi

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

% Patents Active = 88.2

Average Co-Inventor Count = 3.5

ph-index = 7

Forward Citations = 136(Granted Patents)

Location History:

Shiga, JP (1994)
Neyagawa, JP (1995 - 2000)
Osaka-fu, JP (2002)
Katano, JP (2005)
Osaka, JP (1999 - 2006)

Company Filing History:

17 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

Years Active: 1994-2006

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Areas of Expertise:

Thin Film Head

Magnetic Recording Medium

Perpendicular Magnetic Recording

Soft Magnetic Layer

Non-Magnetic Layer

Head Cleaning Device

Magnetic Characteristics

Numerical Analysis Mesh

Rotary Head Cleaner

Refrigeration Element

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7137192 - Method for manufacturing thin film head (2006-11-21),

2. 6859339 - Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this (2005-02-22),

3. 6833975 - Perpendicular magnetic recording medium and apparatus including a soft magnetic layer, an at least 20 nm thick non-magnetic layer, and a 50-90 nm gap length (2004-12-21),

4. 6493194 - Thin film magnetic head (2002-12-10),

5. 6407885 - Thin film magnetic head and method for fabricating same (2002-06-18),

6. 6407004 - Thin film device and method for manufacturing thin film device (2002-06-18),

7. 6072667 - Method and apparatus for analysis of magnetic characteristics of (2000-06-06),

8. 6069776 - Tubular rotary head cleaner having a non-woven fabric for a magnetic (2000-05-30),

9. 5973892 - Head cleaner for magnetic recording/reproducing apparatus having a (1999-10-26),

10. 5946479 - Method and device for generating mesh for use in numerical analysis (1999-08-31),

11. 5936869 - Method and device for generating mesh for use in numerical analysis (1999-08-10),

12. 5729398 - Head cleaning device (1998-03-17),

13. 5602705 - Head cleaning device (1997-02-11),

14. 5602473 - Method and apparatus for analysis of magnetic characteristics of (1997-02-11),

15. 5543179 - Head cleaning device (1996-08-06),

Title: **Masaya Sakaguchi: Innovator in Magnetic Recording Technology**

Introduction

Masaya Sakaguchi, an accomplished inventor based in Neyagawa, Japan, has made significant contributions to the field of magnetic recording technology. With an impressive portfolio of 17 patents, Sakaguchi's innovations have influenced the development of advanced magnetic recording devices and methodologies.

Latest Patents

Among his latest inventions is a method for manufacturing a thin film head, which includes a Giant Magnetoresistive (GMR) element made up of an antiferromagnetic layer, a pinning layer, a nonmagnetic conductive layer, and a free magnetic layer. This design features paired laminated longitudinal biasing layers, each consisting of a hard magnetic layer, a nonmagnetic layer, and a soft magnetic layer. These layers are carefully configured with ferromagnetic and antiferromagnetic properties for enhanced performance.

Sakaguchi's other notable patent is a master information magnetic recording apparatus, which employs a master information carrier and a magnetic field applying member to record information using a ferromagnetic thin film pattern. This innovation is distinguished by its use of multiple patterns at varying angles to optimize the magnetic head's interaction with the recording medium.

Career Highlights

Sakaguchi has established his career primarily at Matsushita Electric Industrial Co., Ltd., where he has been involved in pioneering research and development efforts. His work is a testament to the continuous evolution of magnetic recording technology, aimed at improving data storage and retrieval processes.

Collaborations

Throughout his career, Masaya Sakaguchi has collaborated with notable colleagues such as Yoshiaki Mizoh and Norimoto Nouchi. These partnerships have enabled a fusion of ideas and expertise, driving forward innovation within the company and the industry at large.

Conclusion

Masaya Sakaguchi stands out as a visionary inventor, dedicated to advancing the realm of magnetic recording technology. His contributions, encapsulated by his numerous patents, reflect his commitment to innovation and collaboration, positioning him as a leader in his field.

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]