logo

For the Inventor, By the Inventor

Kusatsu, Japan

Nobusuke Takumi

This inventor holds 5 USPTO granted patents. Top assignee: Ishihara Sangyo Kaisha, Ltd.. Active years: 1985-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobusuke Takumi. Retrieved from https://idiyas.com/inventor/nobusuke-takumi

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 111(Granted Patents)


Location History:

  • Kusatsu, JP (1985 - 1996)
  • Yokkaichi, JP (1997)

Company Filing History:

goldMedal5 out of 394 
 
Ishihara Sangyo Kaisha, Ltd.
 patents

Years Active: 1985-1997

Loading Chart...
5 patents (USPTO):Explore Patents
1. 5609789 - Cobalt-containing magnetic iron oxide and process for producing the same (1997-03-11),
2. 5585032 - Ferromagnetic fine powder for magnetic recording (1996-12-17),
3. 5246609 - Process for preparing ferromagnetic fine particles for magnetic recording (1993-09-21),
4. 4594267 - Process for producing cobalt-containing magnetic iron oxide powder (1986-06-10),
5. 4551327 - Process for producing cobalt-and ferrous iron-containing ferromagnetic (1985-11-05),

Title: Nobusuke Takumi: Innovator in Magnetic Materials

Introduction

Nobusuke Takumi is a prominent inventor based in Kusatsu, Japan. He has made significant contributions to the field of magnetic materials, particularly in the development of cobalt-containing magnetic iron oxide. With a total of 5 patents to his name, Takumi's work has had a substantial impact on magnetic recording technologies.

Latest Patents

Takumi's latest patents include innovative processes for producing cobalt-containing magnetic iron oxide particles. These particles are extremely suitable for magnetic recording mediums, especially for image recording applications. His patents disclose a process for producing these particles from the precursor, .gamma.-FeOOH, which is advantageous for industrial applications. Additionally, he has developed ferromagnetic fine powder for magnetic recording, characterized by specific metallic element compositions and crystal phases that enhance performance.

Career Highlights

Nobusuke Takumi is currently associated with Ishihara Sangyo Kaisha, Ltd., where he continues to advance research in magnetic materials. His expertise in the field has led to the development of materials that meet stringent industry requirements, making him a valuable asset to his company.

Collaborations

Some of Takumi's notable coworkers include Masaharu Hirai and Kazuo Nakata. Their collaborative efforts have contributed to the advancement of technologies in magnetic materials.

Conclusion

Nobusuke Takumi's innovative work in cobalt-containing magnetic iron oxide has positioned him as a key figure in the field of magnetic recording technologies. His contributions continue to influence the industry and pave the way for future advancements.

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]
Loading…