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For the Inventor, By the Inventor

Moriyama, Japan

Kazuo Nakata

This inventor holds 7 USPTO granted patents. Top assignee: Ishihara Sangyo Kaisha, Ltd.. Active years: 1983-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Nakata. Retrieved from https://idiyas.com/inventor/kazuo-nakata-5kelv5tl

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 4

Forward Citations = 134(Granted Patents)


Company Filing History:

goldMedal7 out of 394 
 
Ishihara Sangyo Kaisha, Ltd.
 patents

Years Active: 1983-1996

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7 patents (USPTO):Explore Patents
1. 5585032 - Ferromagnetic fine powder for magnetic recording (1996-12-17),
2. 5246609 - Process for preparing ferromagnetic fine particles for magnetic recording (1993-09-21),
3. 4560544 - Process for the preparation of acicular .alpha.-FeOOH for magnetic (1985-12-24),
4. 4539261 - Process for producing magnetic powder and product (1985-09-03),
5. 4501774 - Process for the production of cobalt-containing magnetic iron oxide (1985-02-26),
6. 4486467 - Process for producing cobalt-containing magnetic iron oxide powder (1984-12-04),
7. 4414245 - Process for producing cobalt containing ferromagnetic iron oxides (1983-11-08),

Title: Kazuo Nakata: Innovator in Magnetic Recording Technology

Introduction

Kazuo Nakata is a prominent inventor based in Moriyama, Japan. He has made significant contributions to the field of magnetic recording technology, holding a total of 7 patents. His innovative work has advanced the development of ferromagnetic materials used in various recording applications.

Latest Patents

Nakata's latest patents include a novel ferromagnetic fine powder for magnetic recording. This invention is characterized by platelet-like ferrite crystal particles with a specific metallic element composition. The Ba/Fe molar ratio is maintained between 1/50 to 1/8, with the total amount of Ni and Zn being less than 0.5 mole and not less than 0.07 mole per mole of Fe. The crystal phase can be a magnetoplumbite phase, spinel phase, or a composite phase, achieving a saturation magnetization of 60 emu/g or more. Additionally, he has developed a process for producing these ferromagnetic fine particles, which involves preparing a starting material solution and subjecting it to specific heat treatments to create hexagonal platelet Ba-ferrite particles.

Career Highlights

Kazuo Nakata is associated with Ishihara Sangyo Kaisha, Ltd., where he has been instrumental in advancing research and development in magnetic materials. His work has not only contributed to the company's portfolio but has also positioned it as a leader in the field of magnetic recording technology.

Collaborations

Throughout his career, Nakata has collaborated with notable colleagues, including Tsuneo Ishikawa and Masaharu Hirai. These collaborations have fostered innovation and have led to the successful development of various technologies in the magnetic recording sector.

Conclusion

Kazuo Nakata's contributions to magnetic recording technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in magnetic materials, showcasing the importance of innovation in technology.

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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