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For the Inventor, By the Inventor

Kawasaki, Japan

Yoshinori Ohtsuka

USPTO Granted Patents = 16

Average Co-Inventor Count = 3.9

ph-index = 7

Forward Citations = 122(Granted Patents)


Location History:

  • Kanagawa, JP (1998 - 2001)
  • Atsugi, JP (2001)
  • Kawasaki, JP (1998 - 2007)

Company Filing History:

goldMedal16 out of 39,244 
 
Fujitsu Corporation
 patents

Years Active: 1998-2007

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16 patents (USPTO):Explore Patents
1. 7167341 - Thin film magnetic head having lower auxiliary magnetic pole on lower magnetic pole layer (2007-01-23),
2. 6828046 - Soft magnetic film of FeCoMO having a high saturation flux density, a moderate soft magnetism and a uniaxial magnetic anisotropy (2004-12-07),
3. 6813824 - Method of producing thin film magnetic head (2004-11-09),
4. 6751052 - Thin film magnetic head with short lower magnetic pole piece (2004-06-15),
5. 6692977 - Method for manufacturing magnetic head (2004-02-17),
6. 6614620 - Thin film magnetic head (2003-09-02),
7. 6567239 - Thin film magnetic head including a coil insulating resin filler and an insulating metallic layer covering at least partly the insulating resin filler on a datum plane (2003-05-20),
8. 6324032 - Magnetic recording medium having linear or curved tracking servo patterns formed obliquely relative to direction of tracks, and magnetic recording apparatus using the same (2001-11-27),
9. 6180421 - Method and apparatus for manufacturing magnetic head (2001-01-30),
10. 6083410 - Thin film magnetic head and process for producing same (2000-07-04),
11. 6055139 - Magnetic recording medium and method of forming the same and magnetic (2000-04-25),
12. 5995339 - Magnetoresistive head with a front flux guide and an embedded MR element (1999-11-30),
13. 5859753 - Spin valve magnetoresistive head with spun valves connected in series (1999-01-12),
14. 5774308 - Thin film inductive head and magnetic writing/reading drive including (1998-06-30),
15. 5771141 - Magnetoresistive head and magnetic recording/reproducing apparatus (1998-06-23),

Title: Innovations of Yoshinori Ohtsuka

Introduction

Yoshinori Ohtsuka is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of magnetic technology, holding a total of 16 patents. His work has been instrumental in advancing the capabilities of thin film magnetic heads.

Latest Patents

One of his latest patents involves a thin film magnetic head that features a lower auxiliary magnetic pole on the lower magnetic pole layer. This design includes a depression on the surface of the lower magnetic pole layer, which is filled with a non-magnetic material. The innovative approach allows for a wider selection of materials for the lower magnetic pole layer and the lower auxiliary magnetic pole. Another notable patent describes a soft magnetic film composed of Fe, Co, a metallic element, and oxygen. This film is characterized by a bcc phase with a crystal grain size not exceeding 50 nm in diameter, enhancing its magnetic properties.

Career Highlights

Yoshinori Ohtsuka is currently associated with Fujitsu Corporation, where he continues to push the boundaries of magnetic technology. His work has not only contributed to the company's innovations but has also set new standards in the industry.

Collaborations

Throughout his career, Ohtsuka has collaborated with notable colleagues such as Takao Koshikawa and Hiroshi Maeda. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Yoshinori Ohtsuka's contributions to magnetic technology through his patents and collaborations highlight his role as a leading inventor. His innovative designs and materials continue to influence the industry and pave the way for future advancements.

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