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For the Inventor, By the Inventor

Kanagawa, Japan

Yoshitaka Ochiai

This inventor holds 10 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1984-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshitaka Ochiai. Retrieved from https://idiyas.com/inventor/yoshitaka-ochiai

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 6

Forward Citations = 88(Granted Patents)


Location History:

  • Yokohama, JP (1984 - 1987)
  • Kanagawa, JP (1987 - 1999)

Company Filing History:

goldMedal10 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1984-1999

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10 patents (USPTO):Explore Patents
1. 5958575 - Magneto-optical recording medium (1999-09-28),
2. 5400307 - Magneto-optical recording medium with stacked layer structure (1995-03-21),
3. 5296989 - High density dual gap magnetic head using polar Kerr effect (1994-03-22),
4. 4748000 - Soft magnetic thin film (1988-05-31),
5. 4707417 - Magnetic composite film (1987-11-17),
6. 4640871 - Magnetic material having high permeability in the high frequency range (1987-02-03),
7. 4639278 - Method of manufacturing an amorphous magnetic alloy (1987-01-27),
8. 4475962 - Annealing method for amorphous magnetic alloy (1984-10-09),
9. 4473415 - Method of manufacturing an amorphous magnetic alloy (1984-09-25),
10. 4444602 - Method of manufacturing amorphous magnetic alloy ribbon and use for (1984-04-24),

Title: **Yoshitaka Ochiai: A Pioneer in Magneto-Optical Recording Technologies**

Introduction

Yoshitaka Ochiai is a distinguished inventor based in Kanagawa, Japan. With a commendable portfolio of 10 patents, he has significantly contributed to the field of magneto-optical recording technologies. His innovative work has paved the way for advancements in data storage solutions, particularly in high-density recording systems.

Latest Patents

Among his latest inventions, Yoshitaka has developed a magneto-optical recording medium that features a multi-layer magnetic structure. This innovative medium comprises an artificial lattice film made from alternating cobalt (Co) and platinum (Pt) or palladium (Pd) layers, combined with a rare earth-transition metal layer. This design not only ensures high coercivity through the rare earth-transition metal film but also achieves a satisfactory Kerr rotation angle within the short wavelength range, making it suitable for next-generation high-density recording utilizing short wavelength lasers. Additionally, he has patented another magneto-optical recording medium characterized by a stacked layer structure, where Co layers are alternated with Pt and/or Pd layers to achieve optimal thickness ranging from 50 to 800 angstroms.

Career Highlights

Yoshitaka Ochiai's career highlights include his tenure at Sony Corporation, where he has played a crucial role in advancing magneto-optical technologies. His innovative spirit and relentless pursuit of excellence in the field have made him a key player in the development of next-generation data storage solutions.

Collaborations

Throughout his career, Yoshitaka has collaborated with notable coworkers, including Masatoshi Hayakawa and Koichi Aso. These collaborations have led to the sharing of ideas and the acceleration of innovative projects, further enhancing the progress in the field of magneto-optical recording mediums.

Conclusion

Yoshitaka Ochiai continues to be a driving force in the world of innovations surrounding magneto-optical recording technologies. His contributions not only highlight his expertise as an inventor but also underscore the importance of collaboration in fostering advancements that can transform data storage solutions for the future.

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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