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For the Inventor, By the Inventor

Tokyo, Japan

Kazumasa Kumagai

This inventor holds 7 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1999-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumasa Kumagai. Retrieved from https://idiyas.com/inventor/kazumasa-kumagai

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 24(Granted Patents)


Company Filing History:

goldMedal7 out of 36,735 
 
Nec Corporation
 patents

Years Active: 1999-2001

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7 patents (USPTO):Explore Patents
1. 6267824 - Method for manufacturing a magnetoresistive effect composite having a pole containing Co-M (2001-07-31),
2. 6154345 - Magnetoresistive effect composite head (2000-11-28),
3. 6141859 - Method for making a merged head device (2000-11-07),
4. 6125009 - Magnetoresistive effect composite head having a pole containing Co-M (2000-09-26),
5. 6057991 - Thin film magnetic head with an improved surface to reduce the (2000-05-02),
6. 6055137 - Magnetoresistive effect composite head with configured pole tip (2000-04-25),
7. 5938941 - Magnetoresistance effect composite head and method of forming the same (1999-08-17),

Title: Innovations of Kazumasa Kumagai: Pioneering Magnetoresistive Technologies

Introduction

Kazumasa Kumagai is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of magnetoresistive technologies. With a total of 7 patents to his name, Kumagai has made strides in enhancing data recording methods through innovative engineering solutions.

Latest Patents

Among his latest inventions is a method for manufacturing a magnetoresistive effect composite head. This advanced design employs magnetic shields opposing each other on a slider main body made of a ceramic material, separated by a predetermined gap. The innovative magnetoresistive effect element is strategically positioned between these magnetic shields and is intended for application in recording information onto a medium via a magnetic field. The invention details the use of a central spin-valve element to sense medium fields while integrating end regions that supply a bias field and current. His patent also covers a comprehensive method for producing the head, demonstrating great promise in improving the precision of data recording applications.

Career Highlights

Kazumasa Kumagai's career is marked by his influential role at NEC Corporation, a leader in technology innovation. His work within this esteemed company has propelled advancements in performance and design of magnetoresistive devices, contributing to both commercial success and technological progress in the sector.

Collaborations

Throughout his career, Kumagai has collaborated with esteemed colleagues such as Nobuyuki Ishiwata and Tsutomu Ishi. These partnerships have fostered a dynamic environment for creativity and have enhanced the development of cutting-edge technologies that push the boundaries of current understanding in the field.

Conclusion

Kazumasa Kumagai's contributions to the world of magnetoresistive technologies underline the importance of innovation in enhancing data recording methods. His impressive portfolio of patents not only showcases his invention prowess but also reflects his commitment to advancing technology in meaningful ways. As he continues to work alongside accomplished colleagues at NEC Corporation, the future holds great potential for further advancements in this exciting field.

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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