Company Filing History:

10 out of 52,711

Kabushiki Kaisha Toshiba

patents

4 out of 2,916

Tokyo Shibaura Denki Kabushiki Kaisha

patents

Years Active: 1982-1998

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14 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 5766763 - Hexagonal system ferrite powder for a high density magnetic recording (1998-06-16),

2. 5686137 - Method of providing hexagonal ferrite magnetic powder with enhanced (1997-11-11),

3. 5576114 - High density magnetic recording medium containing hexagonal system (1996-11-19),

4. 5494749 - Magnetic powder for magnetic recording and magnetic recording medium (1996-02-27),

5. 5378547 - Magnetic powder for magnetic recording and magnetic recording medium (1995-01-03),

6. 5104750 - Magnetic recording medium (1992-04-14),

7. 5077146 - Magnetic recording medium containing a substituted hexagonal ferrite (1991-12-31),

8. 4636433 - Magnetic powders for magnetic recording media and magnetic recording (1987-01-13),

9. 4606971 - Magnetic recording medium (1986-08-19),

10. 4582623 - Barium ferrite magnetic powder and recording medium employing the same (1986-04-15),

11. 4569775 - Method for manufacturing a magnetic powder for high density magnetic (1986-02-11),

12. 4493874 - Production of a magnetic powder having a high dispersibility (1985-01-15),

13. 4407721 - Process for manufacturing powder for magnetic recording medium (1983-10-04),

14. 4341648 - Method for manufacturing magnetic powder for high density magnetic (1982-07-27),

Title: The Innovations of Osamu Kubo

Introduction

Osamu Kubo is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic materials, holding a total of 14 patents. His work focuses on enhancing the performance of magnetic recording media, which is crucial for data storage technologies.

Latest Patents

Kubo's latest patents include a hexagonal system ferrite powder designed for high-density magnetic recording. This magnetic powder exhibits a unique powder compression characteristic, allowing it to achieve a packing density between 2.5 to 3.5 g/cm³ after being subjected to a load of 400 kgf/cm². This innovation results in a magnetic recording medium that not only secures high output but also minimizes noise. Another notable patent involves a method for providing hexagonal ferrite magnetic powder with enhanced stability. This invention aims to improve the coercive force stability of both the magnetic powder and the recording medium, ensuring better performance in various applications.

Career Highlights

Throughout his career, Osamu Kubo has worked with notable companies such as Toshiba Corporation and Tokyo Shibaura Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in magnetic materials.

Collaborations

Kubo has collaborated with several talented individuals in his field, including Tutomu Nomura and Tadashi Ido. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Osamu Kubo's contributions to magnetic materials and recording technologies have made a significant impact in the industry. His innovative patents continue to influence the development of high-performance magnetic recording media.

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