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For the Inventor, By the Inventor

Zama, Japan

Toshikazu Nishihara

This inventor holds 12 USPTO granted patents. Top assignee: Victor Company of Japan, Limited. Active years: 1979-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikazu Nishihara. Retrieved from https://idiyas.com/inventor/toshikazu-nishihara

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 7

Forward Citations = 91(Granted Patents)


Location History:

  • Yokohama, JP (1979 - 1982)
  • Zama, JP (1986 - 1994)

Company Filing History:

goldMedal12 out of 2,887 
 
Victor Company of Japan, Limited
 patents

Years Active: 1979-1994

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12 patents (USPTO):Explore Patents
1. 5316631 - Method for fabricating a magnetic recording medium (1994-05-31),
2. 4808489 - Method of producing magnetic disc (1989-02-28),
3. 4776938 - Method of producing magnetic disc (1988-10-11),
4. 4753852 - Magnetic recording medium comprising a magnetic Co-Ni-Cr alloy thin layer (1988-06-28),
5. 4743348 - Magnetic medium for horizontal magnetization recording and method for (1988-05-10),
6. 4711810 - Magnetic medium for horizontal magnetization recording and method for (1987-12-08),
7. 4680218 - Magnetic recording medium (1987-07-14),
8. 4664976 - Magnetic recording medium comprising a protective carbon nitride layer (1987-05-12),
9. 4626480 - Magnetic recording medium comprising a vacuum-deposited magnetic film of (1986-12-02),
10. 4317675 - Magnetic iron powder containing molybdenum (1982-03-02),
11. 4315052 - Magnetic recording medium (1982-02-09),
12. 4167582 - Magnetic metallic powder containing iron and magnetic recording medium (1979-09-11),

Title: Innovations of Toshikazu Nishihara

Introduction

Toshikazu Nishihara is a prominent inventor based in Zama, Japan. He has made significant contributions to the field of magnetic recording technology. With a total of 12 patents to his name, his work has had a considerable impact on the industry.

Latest Patents

Nishihara's latest patents include a method for fabricating a magnetic recording medium. This innovative medium comprises, on a substrate, a chromium undercoat layer and a cobalt alloy thin film formed in that order. The coercive force of the medium is significantly improved by incorporating oxygen either in the chromium undercoat layer or in the cobalt alloy thin film. Another notable patent is for a method of producing a magnetic disc. This magnetic disc features a non-magnetic underlayer formed on a substantially flat surface of a substrate by growing grains of a magnetic material in a circumferential direction. The magnetic layer is formed on the non-magnetic underlayer, with the magnetic easy axis oriented in the circumferential direction of the magnetic disc.

Career Highlights

Nishihara is currently employed at the Victor Company of Japan, Limited. His work at this esteemed company has allowed him to further develop his innovative ideas and contribute to advancements in magnetic recording technology.

Collaborations

Some of his notable coworkers include Toshio Ando and Akihiro Kimura. Their collaboration has fostered an environment of creativity and innovation, leading to the development of groundbreaking technologies.

Conclusion

Toshikazu Nishihara's contributions to the field of magnetic recording technology are noteworthy. His innovative patents and collaborations have significantly advanced the industry. His work continues to inspire future innovations in this vital area of 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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