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For the Inventor, By the Inventor

Tochigi, Japan

Osamu Yoshida

This inventor holds 17 USPTO granted patents, primarily in Magnetic Recording Media. Top assignee: Kao Corporation. Active years: 1994-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Osamu Yoshida. Retrieved from https://idiyas.com/inventor/osamu-yoshida-uvuvi11q

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 = 100.0

Average Co-Inventor Count = 4.1

ph-index = 3

Forward Citations = 45(Granted Patents)


Location History:

  • Ichikaimachi, JP (1998)
  • Haga-gun, JP (1998)
  • Tochigi, JP (1994 - 1999)
  • Tochigi-ken, JP (1998 - 2000)

Company Filing History:

goldMedal17 out of 3,680 
 
Kao Corporation
 patents

Years Active: 1994-2000

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Areas of Expertise:
Magnetic Recording Medium
Protective Carbon Film
Magnetic Metallic Films
Magnetic Contact Duplication
Manufacturing Method
Carbon Black
Production Process
Duplication System
17 patents (USPTO):Explore Patents
1. 6086981 - Magnetic recording medium (2000-07-11),
2. 5885724 - Magnetic recording medium (1999-03-23),
3. 5853871 - Magnetic recording medium (1998-12-29),
4. 5817429 - Magnetic recording medium (1998-10-06),
5. 5800917 - Magnetic recording medium (1998-09-01),
6. 5798176 - Magnetic recording medium (1998-08-25),
7. 5796533 - System for magnetic contact duplication (1998-08-18),
8. 5766781 - Magnetic recording medium (1998-06-16),
9. 5766766 - Magnetic recording medium having a protective carbon film which contains (1998-06-16),
10. 5744234 - Magnetic recording medium (1998-04-28),
11. 5736263 - Magnetic recording medium comprising successive magnetic metallic films (1998-04-07),
12. 5731068 - Magnetic recording medium (1998-03-24),
13. 5723212 - Magnetic recording medium manufacturing method and manufacturing (1998-03-03),
14. 5593723 - Magnetic recording medium manufacturing method and manufacturing (1997-01-14),
15. 5538802 - Magnetic recording medium and process for producing the same (1996-07-23),

Title: The Innovative Mind of Osamu Yoshida

Introduction

Osamu Yoshida, a renowned inventor based in Tochigi, Japan, has made significant contributions to the field of magnetic recording technology. With a remarkable portfolio of 17 patents, Yoshida's work focuses on advancing the efficiency and performance of magnetic recording media.

Latest Patents

Among Yoshida's latest patents are two innovative designs for magnetic recording mediums. The first patent details a magnetic recording medium that comprises a substrate with an uppermost magnetic layer containing ferromagnetic metal powder. This layer features an average dry thickness ranging from 0.03 to 0.5 micrometers. Notably, the ferromagnetic metal powder is oriented horizontally, providing the medium with a coercive force of 120 kA/m or higher in that direction. The design also ensures a maximum magnetic susceptibility ratio of 1.3 or higher.

The second patent introduces a unique magnetic recording medium featuring an Fe–N–O magnetic layer coated on a substrate. In this layer, the content of iron, nitrogen, and oxygen meets specific compositional requirements, enhancing its performance. The magnetic layer displays a coercive force ranging from 1200 to 2400 Oe in a horizontal direction, thus exhibiting excellent C/N characteristics that are crucial for high-fidelity magnetic recording applications.

Career Highlights

Osamu Yoshida's career is marked by his association with Kao Corporation, a company known for its innovative approaches in various technologies. His extensive research and development efforts have led to transformative advancements in magnetic recording mediums, showcasing his dedication to the field.

Collaborations

Throughout his career, Yoshida has collaborated with esteemed professionals such as Noriyuki Kitaori and Hirohide Mizunoya. These partnerships have facilitated fruitful exchanges of ideas and knowledge, further enhancing the innovative potential of the technologies they have developed together.

Conclusion

Osamu Yoshida exemplifies the spirit of innovation in the field of magnetic technology. His 17 patents serve as a testament to his ingenuity and commitment to pushing the boundaries of what is possible in magnetic recording mediums. As technology continues to evolve, Yoshida's contributions are likely to have a lasting impact, inspiring future inventors and researchers in the industry.

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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