Company Filing History:

13 out of 35,670

Nec Corporation

Years Active: 1998-2007

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7238540 - Magnetic random access memory and method of manufacturing the same (2007-07-03),

2. 7173793 - Recording head, recording head manufacturing method, combined head and magnetic recording/reproduction apparatus (2007-02-06),

3. 7042319 - Thin film electromagnet and switching device comprising it (2006-05-09),

4. 7023659 - Magnetic head having an antistripping layer for preventing a magnetic layer from stripping (2006-04-04),

5. 6903908 - Magnetoresistive effect sensor with barrier layer smoothed by composition of lower shield layer (2005-06-07),

6. 6795271 - Recording head, recording head manufacturing method, combined head and magnetic recording/reproduction apparatus (2004-09-21),

7. 6791794 - Magnetic head having an antistripping layer for preventing a magnetic layer from stripping (2004-09-14),

8. 6780530 - Magnetic material having a high saturation magnetic flux density and a low coercive force (2004-08-24),

9. 6718621 - Magnetoresistive head production method (2004-04-13),

10. 6687082 - Magnetic head and manufacturing method thereof and magnetic recording and reproducing apparatus (2004-02-03),

11. 6592811 - Magnetic material having a high saturation magnetic flux density and a low coercive force (2003-07-15),

12. 6493195 - Magnetoresistance element, with lower electrode anti-erosion/flaking layer (2002-12-10),

13. 6466416 - Magnetic head, method for making the same and magnetic recording/reproducing device using the same (2002-10-15),

14. 5706152 - Thin film magnetic head having improved insulation of upper side lead (1998-01-06),

Title: Hiroaki Honjo: Innovator in Magnetic Memory Technology

Introduction

Hiroaki Honjo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic memory technology, holding a total of 14 patents. His work has been instrumental in advancing the capabilities of magnetic random access memory (MRAM) and recording head technologies.

Latest Patents

Among his latest patents is a groundbreaking invention related to magnetic random access memory. This patent describes a magnetic random access memory that includes a substrate, a first ferromagnetic layer, and a magnetic tunnel junction (MTJ) device. The MTJ device is positioned on the same side of the substrate as the first ferromagnetic layer, with a wiring layer situated between them. Notably, the first and second perpendicular projections of the ferromagnetic layers on the substrate differ in area, with one containing the other.

Another significant patent involves a recording head and its manufacturing method. This recording head features a magnetic head where the ends of opposed first and second magnetic cores form a recording gap. The design includes coils insulated by an insulating material, which are placed between the magnetic cores. The magnetic fluxes excited by these coils leak from the recording gap, enabling recording onto a recording medium. The patent specifies that the distance from the recording gap to the magnetic joint should not exceed 20 micrometers.

Career Highlights

Hiroaki Honjo has worked with notable companies such as NEC Corporation and Denso Corporation. His experience in these organizations has contributed to his expertise in magnetic technologies and innovations.

Collaborations

Throughout his career, Honjo has collaborated with esteemed colleagues, including Nobuyuki Ishiwata and Shinsaku Saito. These partnerships have fostered a collaborative environment that has led to significant advancements in their respective fields.

Conclusion

Hiroaki Honjo's contributions to magnetic memory technology and his impressive portfolio of patents highlight his role as a leading inventor in this domain. His work continues to influence the future of data storage and retrieval technologies.

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