Company Filing History:

9 out of 1,112

Hitachi Maxell, Limited

patents

2 out of 56

Hitachi Maxwell, Ltd.

where one patent can have more than one assignee

Years Active: 1992-2004

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6690624 - Magnetic lens, magnetic reproducing element, reproducing apparatus and reproducing method (2004-02-10),

2. 6671233 - Magneto-optical recording medium and reproduction method therefor (2003-12-30),

3. 6501729 - Cartridge for information-recording media having deformable elastic pressing member urged by projection on shutter (2002-12-31),

4. 6438073 - Magnetic lens, magnetic reproducing element, reproducing apparatus and reproducing method (2002-08-20),

5. 6339583 - Cartridge for information-recording media having deformable elastic member on shutter (2002-01-15),

6. 6122228 - Magneto-optical recording medium and reproduction method therefor (2000-09-19),

7. 5537389 - Disk cartridge having a single closing energizer for closing two (1996-07-16),

8. 5495467 - Disc cartridge having an opening/closing slider mechanism (1996-02-27),

9. 5273598 - Optical disc manufacturing method (1993-12-28),

10. 5199988 - Manufacturing apparatus and method for recording medium (1993-04-06),

11. 5166844 - Disc drive apparatus having a mechanism for opening/closing the shutter (1992-11-24),

Title: Yoshitane Tsuburaya: Innovator in Magnetic Technology

Introduction

Yoshitane Tsuburaya is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of magnetic technology, holding a total of 11 patents. His innovative work has advanced the understanding and application of magneto-optical recording mediums.

Latest Patents

Tsuburaya's latest patents include groundbreaking inventions such as a magnetic lens, a magnetic reproducing element, and a reproducing apparatus and method. The magnetic lens features a reproducing layer and a magnetic slit, which allows for the inversion of magnetization in response to the leak magnetic field of a recording magnetic domain. This transition enhances the signal intensity of the reproduced magnetization information through the magneto-optical effect. Additionally, his work on magneto-optical recording mediums involves a complex arrangement of layers that facilitate high-sensitivity detection of minute magnetic domains, ensuring reliable reproduction of amplified signals.

Career Highlights

Throughout his career, Tsuburaya has worked with notable companies such as Hitachi Maxell, Limited and Hitachi Maxwell, Ltd. His experience in these organizations has contributed to his expertise in magnetic technologies and innovations.

Collaborations

Tsuburaya has collaborated with esteemed colleagues, including Katsusuke Shimazaki and Hitoshi Watanabe. These partnerships have fostered a creative environment that has led to significant advancements in their respective fields.

Conclusion

Yoshitane Tsuburaya's contributions to magnetic technology through his patents and collaborations highlight his role as a leading inventor in this domain. His innovative spirit continues to inspire advancements in magneto-optical recording technologies.

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