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For the Inventor, By the Inventor

Miyagi, Japan

Hirofumi Okumura

This inventor holds 25 USPTO granted patents and 3 published patent applications and 7 EPO patents, primarily in Magnetic Sensors. Top assignees: Alps Electric Co., Ltd., Nsk Corporation, Nsk Steering Systems Co., Ltd.. Active years: 1994-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Okumura. Retrieved from https://idiyas.com/inventor/hirofumi-okumura

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

USPTO Granted Patents = 25 

% Patents Active = 72.0

 

Average Co-Inventor Count = 1.6

ph-index = 7

Forward Citations = 175(Granted Patents)


Location History:

  • Miyagi, JP (1994)
  • Miyagi-ken, JP (2001 - 2009)
  • Tokyo, JP (2002 - 2018)

Company Filing History:

goldMedal24 out of 4,048 
 
Alps Electric Co., Ltd.
 patents
silverMedal1 out of 2,468 
 
Nsk Corporation
 patents
bronzeMedal1 out of 41 
 
Nsk Steering Systems Co., Ltd.
 patents
4. 1 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1994-2018

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Areas of Expertise:
Magnetic Sensor
Rotation Angle Detection
Rotary Position Sensor
Magnetic Switch
Angle Sensor
Rotary Encoder
High-Precision Detection
Waterproof Structure
Magnetic Displacement Detection
Input Device
Linear Operation Type Electric Part
Variable Resistor Device
25 patents (USPTO):Explore Patents
1. 9915710 - Magnetic sensor, method of manufacturing magnetic sensor, and method of designing magnetic sensor (2018-03-13),
2. 7521924 - Member position detection apparatus not affected by external magnetic field (2009-04-21),
3. 7064537 - Rotation angle detecting device (2006-06-20),
4. 7045998 - Rotation detecting device (2006-05-16),
5. 6900713 - Magnetic switch capable of instantaneous switching of an output signal and magnetic sensor (2005-05-31),
6. 6809513 - Rotary position sensor having waterproof, explosion-protective structure (2004-10-26),
7. 6784774 - Magnetic switch capable of performing normal detection for a long period of time (2004-08-31),
8. 6720762 - Rotation-angle detecting device capable of detecting absolute angle with simple configuration (2004-04-13),
9. 6687647 - Rotation-angle detecting device capable of precisely detecting absolute angle (2004-02-03),
10. 6603305 - Rotary encoder having code member rotating along accurate circle as shaft rotates (2003-08-05),
11. 6539329 - Apparatus for detecting rotational angle by employing two or more detection signals based on rotational angle and rotational direction of rotating member (2003-03-25),
12. 6507270 - Linear operation type electric part (2003-01-14),
13. 6496003 - Magnetic displacement detecting device having linear changing magnetic field over the length of the service (2002-12-17),
14. 6484119 - Input device having deflection detecting elements (2002-11-19),
15. 6474146 - Rotary sensor capable of high-precision detection of rotation angle transmitted from outside (2002-11-05),

Title: **Innovations by Hirofumi Okumura: A Pioneer in Magnetic Sensor Technology**

Introduction

Hirofumi Okumura, an accomplished inventor based in Miyagi-ken, Japan, has made significant contributions to the field of magnetic sensor technology. With a remarkable portfolio of 25 patents, his innovative designs have paved the way for advancements in sensor applications, particularly in automotive and industrial settings.

Latest Patents

Hirofumi's latest patents include groundbreaking developments in magnetic sensors and their manufacturing processes. One of his notable inventions details a magnetic sensor in which the magnetization amounts of the first and second ferromagnetic layers are meticulously controlled to enhance sensor performance. Another key patent introduces a member position detection apparatus that operates effectively without interference from external magnetic fields. This apparatus optimizes design freedom for seat rails while minimizing dust accumulation.

Career Highlights

Throughout his career, Hirofumi Okumura has worked with prominent companies, including Alps Electric Co., Ltd., where he applied his expertise in the development of innovative sensor technologies. His work has not only showcased his technical abilities but also his commitment to advancing the field of magnetic sensors.

Collaborations

Hirofumi has had the opportunity to collaborate with notable colleagues, including Toshio Ogawa and Ichiro Tokunaga. Together, they have contributed to several significant projects that have expanded the scope and functionality of magnetic sensing devices.

Conclusion

Hirofumi Okumura's work epitomizes innovation in magnetic sensor technology. His patents reflect a deep understanding of the underlying principles of magnetism and a forward-thinking approach that addresses contemporary challenges in sensor applications. With a solid foundation of experience and a collaborative spirit, Okumura continues to impact the landscape of modern technology with his inventive spirit.

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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