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For the Inventor, By the Inventor

Muro, Japan

Yoshiaki Katsuyama

This inventor holds 8 USPTO granted patents. Top assignees: Sumitomo Special Metals Co., Ltd., Nippon Tungsten Co., Ltd., Sumitomo Special Metal Co. Ltd.. Active years: 1986-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiaki Katsuyama. Retrieved from https://idiyas.com/inventor/yoshiaki-katsuyama

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 6

Forward Citations = 119(Granted Patents)


Location History:

  • Osaka, JP (1986)
  • Yamatotakada, JP (1989)
  • Muro, JP (1987 - 1994)

Company Filing History:

goldMedal7 out of 240 
 
Sumitomo Special Metals Co., Ltd.
 patents
silverMedal2 out of 57 
 
Nippon Tungsten Co., Ltd.
 patents
bronzeMedal1 out of 26 
 
Sumitomo Special Metal Co. Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-1994

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8 patents (USPTO):Explore Patents
1. 5302560 - Process for the production of magnetic head sliders (1994-04-12),
2. 4875987 - Grooved magnetic substrates and method for producing the same (1989-10-24),
3. 4859638 - Magnetic head sliders, materials therefor, and the process for the (1989-08-22),
4. 4808455 - Magnetic recording disc and process for producing the same (1989-02-28),
5. 4777074 - Grooved magnetic substrates and method for producing the same (1988-10-11),
6. 4690846 - Recording disk substrate members and process for producing same (1987-09-01),
7. 4659606 - Substrate members for recording disks and process for producing same (1987-04-21),
8. 4608293 - Composite substrate for a thin-film magnetic head (1986-08-26),

Title: Yoshiaki Katsuyama: Innovator in Magnetic Head Slider Technology

Introduction

Yoshiaki Katsuyama is a prominent inventor based in Muro, Japan. He has made significant contributions to the field of magnetic head slider technology, holding a total of 8 patents. His work has been instrumental in advancing the capabilities of recording and reading technologies.

Latest Patents

Katsuyama's latest patents include innovative processes for the production of magnetic head sliders. One notable patent describes a sintered material for recording and reading head sliders. Another patent focuses on a grooved magnetic substrate that includes an alumina film layer with a specific hardness, which is crucial for enhancing the performance of magnetic substrates.

Career Highlights

Throughout his career, Yoshiaki Katsuyama has worked with notable companies such as Sumitomo Special Metals Co., Ltd. and Nippon Tungsten Co., Ltd. His expertise in materials science and engineering has led to advancements in the production processes of magnetic components.

Collaborations

Katsuyama has collaborated with several talented individuals in his field, including Toshiaki Wada and Junichi Nakaoka. These collaborations have fostered innovation and have contributed to the successful development of new technologies.

Conclusion

Yoshiaki Katsuyama's contributions to magnetic head slider technology and his impressive portfolio of patents highlight his role as a key innovator in the industry. His work continues to influence advancements in recording and reading technologies.

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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