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For the Inventor, By the Inventor

Sendai, Japan

Noboru Tsuya

This inventor holds 15 USPTO granted patents, primarily in Magnetic Recording Media. Top assignees: Research Development Corporation of Japan, Tohoku University, Other. Active years: 1981-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Noboru Tsuya. Retrieved from https://idiyas.com/inventor/noboru-tsuya

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

Calculating rank
USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 11

Forward Citations = 247(Granted Patents)


Location History:

  • Sendai, JP (1981 - 1985)
  • Sendai City, JP (1982 - 1987)
  • Hachimanyama Setagaya-ku, Tokyo, JP (1991)
  • Tokyo, JP (1991 - 1993)
  • Setagaya-ku, Tokyo, JP (1990 - 1994)

Company Filing History:

goldMedal1 out of 256 
 
Research Development Corporation of Japan
 patents
silverMedal1 out of 1,054 
 
Tohoku University
 patents
bronzeMedal13 out of 834,601 
Other
 patents

Years Active: 1981-1994

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Areas of Expertise:
Magnetic Recording Medium
Magnetic Disk
Silicon Ribbon
Thin Ribbon
Semiconductor Material
Ferromagnetic Amorphous
Dielectric Material
High Silicon Steel
15 patents (USPTO):Explore Patents
1. 5277960 - Substrate for magnetic recording medium and process of producing the same (1994-01-11),
2. 5209837 - Process for preparing magnetic disk (1993-05-11),
3. 5108812 - Substrate for a magnetic disk and process for its production (1992-04-28),
4. 5074971 - Process for preparing magnetic disk (1991-12-24),
5. 5047274 - Annodized aluminum substrate for a magnetic recording disk in which (1991-09-10),
6. 4925738 - Substrate for a magnetic disk and process for its production (1990-05-15),
7. 4682206 - Thin ribbon of semiconductor material (1987-07-21),
8. 4525223 - Method of manufacturing a thin ribbon wafer of semiconductor material (1985-06-25),
9. 4523966 - Process of producing silicon ribbon with p-n junction (1985-06-18),
10. 4363769 - Method for manufacturing thin and flexible ribbon wafer of (1982-12-14),
11. 4339508 - Method for manufacturing a thin and flexible ribbon of superconductor (1982-07-13),
12. 4265682 - High silicon steel thin strips and a method for producing the same (1981-05-05),
13. 4264882 - Electric signal transmission device employing a ferromagnetic amorphous (1981-04-28),
14. 4257830 - Method of manufacturing a thin ribbon of magnetic material (1981-03-24),
15. 4244722 - Method for manufacturing thin and flexible ribbon of dielectric material (1981-01-13),

Title: Innovations of Noboru Tsuya in Magnetic Recording Technology

Introduction

Noboru Tsuya is a prominent inventor based in Sendai, Japan, known for his significant contributions to the field of magnetic recording technology. With a total of 15 patents to his name, Tsuya has developed innovative solutions that enhance the performance and reliability of magnetic recording media.

Latest Patents

Tsuya's latest patents include a substrate for magnetic recording medium and a process for producing the same. The first invention provides a substrate designed to improve CSS properties and magnetic properties by forming both macro-concavo-convex and micro-concavo-convex patterns on its surface. This design prevents degradation of CSS properties due to increased friction and wear of the protective layer in contact with the magnetic head. The second invention outlines a process for producing this substrate, ensuring uniform distribution of the macro and micro patterns simultaneously. Additionally, Tsuya has developed a process for preparing magnetic disks, which involves mirror surface-finishing of a substrate with an anodized aluminum film, followed by a chemical dissolution treatment to widen the pores, and finally coating the substrate with a magnetic continuous thin film.

Career Highlights

Throughout his career, Tsuya has worked at Tohoku University, where he has contributed to various research projects and innovations in magnetic recording technology. His work has been instrumental in advancing the field and has garnered recognition for its practical applications.

Collaborations

Tsuya has collaborated with notable colleagues, including Kenichi Arai and Toshiro Takahashi, who have contributed to his research and development efforts.

Conclusion

Noboru Tsuya's innovative work in magnetic recording technology has led to significant advancements in the field, showcasing his expertise and dedication to improving recording media. His contributions continue to influence the industry and pave the way for future innovations.

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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