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For the Inventor, By the Inventor

Hamamatsu, Japan

Toshiyuki Oohashi

This inventor holds 12 USPTO granted patents and 1 EPO patent. Top assignee: Yamaha Corporation. Active years: 1990-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Oohashi. Retrieved from https://idiyas.com/inventor/toshiyuki-oohashi

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

USPTO Granted Patents = 12

% Patents Active = 58.3


Average Co-Inventor Count = 2.4

ph-index = 5

Forward Citations = 60(Granted Patents)


Location History:

  • Hamamatsu, JP (1990 - 2009)
  • Kakegawa, JP (2008 - 2009)

Company Filing History:

goldMedal12 out of 5,501 
 
Yamaha Corporation
 patents

Years Active: 1990-2009

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12 patents (USPTO):Explore Patents
1. 7598835 - Magnetic sensor, production process of the magnetic sensor and magnetic array suitable for the production process (2009-10-06),
2. 7589528 - Magnetic sensor formed of magnetoresistance effect elements (2009-09-15),
3. 7508196 - Magnetic sensor for pointing device (2009-03-24),
4. 7443158 - Sensor, and method for measuring physical quantity by use of the sensor (2008-10-28),
5. 7187167 - Magnetic sensor (2007-03-06),
6. 7167345 - Magnetoresistive effect sensor including a magnet array of a plurality of permanent magnets (2007-01-23),
7. 7075395 - Magnetic sensor, production process of the magnetic sensor and magnetic array suitable for the production process (2006-07-11),
8. 7023310 - Method for manufacturing magnetic sensor, magnet array used in the method, and method for manufacturing the magnet array (2006-04-04),
9. 6940701 - Magnetic sensor, production process of the magnetic sensor and magnetic array suitable for the production process (2005-09-06),
10. 6904669 - Magnetic sensor and method of producing the same (2005-06-14),
11. 5425819 - Magnetoresistive material (1995-06-20),
12. 4936925 - Method for producing alloy of low thermal expansion (1990-06-26),

Title: Innovations of Toshiyuki Oohashi

Introduction

Toshiyuki Oohashi is a prominent inventor based in Hamamatsu, Japan. He has made significant contributions to the field of magnetic sensors, holding a total of 12 patents. His work focuses on enhancing the functionality and stability of magnetic sensors through innovative designs and processes.

Latest Patents

Oohashi's latest patents include advancements in magnetic sensors and production processes. One notable invention aims to provide a magnetic sensor equipped with a magnetoresistive effect element that can stably maintain the direction of magnetization in a magnetic domain of a free layer. This magnetic sensor features a magnetoresistive effect element with narrow zonal portions, including a pinned layer and a free layer. Additionally, bias magnet films are positioned below both ends of the free layer to apply a bias magnetic field in a predetermined direction. An initializing coil is also included to apply a magnetic field that aligns with the bias magnetic field under specific conditions. Furthermore, the direction of magnetization of the pinned layer is fixed using a magnetic field formed by a magnet array of permanent magnets arranged in a tetragonal lattice.

Another significant patent involves the formation of multiple magnetoresistance effect elements on a single chip. These elements are designed with pinned layers that have fixed magnetization axes crossing each other. The substrate is equipped with magnetic layers that will become two magnetic tunnel effect elements. Magnetic-field-applying layers made of NiCo are formed to sandwich the magnetic layers, allowing for the application of a magnetic field that influences the magnetization of the pinned layers.

Career Highlights

Oohashi is currently employed at Yamaha Corporation, where he continues to innovate in the field of magnetic sensors. His work has not only advanced the technology but has also contributed to the reputation of Yamaha as a leader in this area.

Collaborations

Throughout his career, Oohashi has collaborated with notable colleagues, including Yukio Wakui and Kokichi Aiso. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Toshiyuki Oohashi's contributions to the field of magnetic sensors exemplify the spirit of innovation. His patents reflect a deep understanding of magnetoresistive technologies and their applications. Oohashi's work continues to influence the industry and inspire future advancements in sensor technology.

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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