Tokyo, Japan

Hirokazu Takahashi

This inventor holds 122 USPTO granted patents and 25 published patent applications and 27 EPO patents, primarily in Magnetic Sensors (CPC class G01R33-093). Top assignees: Ddk Ltd., Canon Kabushiki Kaisha, Hitachi, Ltd.. Active years: 1977-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirokazu Takahashi. Retrieved from https://idiyas.com/inventor/hirokazu-takahashi

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

USPTO Granted Patents = 122 

% Patents Active = 75.4

 

Average Co-Inventor Count = 2.8

ph-index = 17

Forward Citations = 970(Granted Patents)

Forward Citations (Not Self Cited) = 943(Dec 10, 2025)


Inventors with similar research interests:

🔬 See more inventors

Location History:

  • Tokyo, JA (1977)
  • Yokohamai, JP (1999 - 2000)
  • Kanagawa-ken, JP (1998 - 2001)
  • Matsudo, JP (2000 - 2004)
  • Kawachi-gun, JP (2007)
  • Koto-ku, JP (2007 - 2009)
  • Chigasaki, JP (2006 - 2011)
  • Chiba, JP (2003 - 2013)
  • Sumida-ku, JP (2011 - 2013)
  • Aomori, JP (2013)
  • Tochigi, JP (2007 - 2014)
  • Kawasaki, JP (2006 - 2015)
  • Hitachinaka, JP (2007 - 2016)
  • Hachinohe, JP (2015 - 2016)
  • Kanagawa, JP (1992 - 2018)
  • Yokohama, JP (1992 - 2021)
  • Nagano, JP (2022)
  • Tokyo, JP (1979 - 2024)

Company Filing History:

goldMedal29 out of 140 
 
Ddk Ltd.
 patents
silverMedal21 out of 92,994 
 
Canon Kabushiki Kaisha
 patents
bronzeMedal15 out of 42,731 
 
Hitachi, Ltd.
 patents
4. 15 out of 8,257 
 
Tdk Corporation
 patents
5. 11 out of 3,675 
 
Kao Corporation
 patents
6. 7 out of 651 
 
Mitsubishi Hitachi Power Systems, Ltd.
 patents
7. 6 out of 61 
 
Petroleum Energy Center
 patents
8. 5 out of 10,641 
 
Sumitomo Electric Industries, Limited
 patents
9. 3 out of 6,924 
 
Kyocera Corporation
 patents
10. 3 out of 681 
 
Tokyo Shibaura Electric Co., Ltd.
 patents
11. 2 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
12. 2 out of 1,874 
 
Fujikura Limited
 patents
13. 2 out of 254 
 
Furukawa Automotive Systems Inc.
 patents
14. 2 out of 60 
 
Mitsui Chemicals Tohcello, Inc.
 patents
15. 2 out of 2,643 
 
The Furukawa Electric Co., Ltd.
 patents
16. 1 out of 67 
 
Autoliv Nissin Brake Systems Japan Co., Ltd.
 patents
17. 1 out of 3,208 
 
Dai Nippon Printing Co., Ltd.
 patents
18. 1 out of 221 
 
Mitsubishi Power, Ltd.
 patents
19. 1 out of 36,684 
 
Nec Corporation
 patents
20. 1 out of 58,145 
 
Sony Corporation
 patents
21. 1 out of 6 
 
Tdk Corpoartion
 patents
22. 1 out of 29,888 
 
Texas Instruments Corporation
 patents
23. 1 out of 2,916 
 
Tokyo Shibaura Denki Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1977-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Magnetic Sensor
Gas Turbine Combustor
Terminal-equipped Electric Wire
Magneto-resistive Effect Element
Dual-fuel Injector
Microwave Assisted Magnetic Head
Coaxial Cable
Image Processing Device
Solenoid Valve
Component-manufacturing Tool
Triaxial Magnetic Sensor
Spin Current Magnetization
122 patents (USPTO):Explore Patents

Title: Hirokazu Takahashi: Pioneering Innovations through Magnetic Sensors

Introduction:

Hirokazu Takahashi is a renowned inventor based in Tokyo, Japan. With an impressive track record of 100 patents to his name, Takahashi has made significant contributions in the field of magnetic sensor technologies. This article highlights some of his latest patents, career highlights, and notable collaborations, showcasing his expertise and pioneering spirit in the realm of innovation and invention.

Latest Patents:

Takahashi's recent patents focus on advancements in magnetic sensor technologies. Two notable examples are outlined below:

1. Magnetic Sensor with MR Element:

The first patent involves a magnetic sensor comprising a Magneto-Resistive (MR) element with a unique structure. The MR element includes a free layer designed with a long shape in one direction, and a thickness that varies perpendicularly. Notably, the thickness at the edges of the first surface is smaller than at a predetermined point on the surface, optimizing sensor performance.

2. Magnetic Sensor with Inclined Support Member:

In another patent, Takahashi proposes a magnetic sensor design with an MR element mounted on an inclined support member. The support member's inclined surface exhibits different angles at distinct positions. By placing the first edge of the MR element above a specific position, an improved sensing capability is achieved, leveraging the curvature characteristics of the inclined portion.

Career Highlights:

Throughout his career, Hirokazu Takahashi has been associated with several prominent companies, channeling his inventive prowess into cutting-edge technologies. Some notable highlights include:

1. Canon Inc.:

Takahashi contributed significantly to Canon Inc., one of the world's leading imaging and optical product companies. His invaluable inventions and patents in the field of magnetic sensor technologies greatly enhanced product performance and functionality.

2. DDK Co., Ltd.:

Takahashi's expertise also extended to DDK Co., Ltd., a renowned manufacturer of connectors and electronics components. His contributions to the development and improvement of magnetic sensor applications played a crucial role in enhancing overall product reliability and accuracy.

Collaborations:

In his quest for innovation, Hirokazu Takahashi has collaborated with esteemed professionals, expanding his knowledge and pushing the boundaries of magnetic sensor technologies. Some of his notable coworkers include:

1. Kazunori Takei:

Takei has been a valuable collaborator of Takahashi, sharing expertise in the field of magnetic sensor design. Together, they have explored novel concepts and brought forth groundbreaking improvements in sensor performance and miniaturization.

2. Hitoshi Kikuchi:

Kikuchi, another influential figure in the domain of magnetic sensor technologies, has worked closely with Takahashi on numerous projects. Their collaborative efforts have yielded remarkable advancements, positioning them as key contributors to the field.

Conclusion:

Hirokazu Takahashi's extensive patent portfolio and remarkable achievements in the realm of magnetic sensor technologies reflect his boundless dedication to innovation. With a strong track record in companies like Canon Inc. and DDK Co., Ltd., and fruitful collaborations with esteemed colleagues, his contributions have had a profound impact on the development of magnetic sensors. Takahashi continues to inspire and drive advancements in his field, solidifying his position as a trailblazer in the world of innovation and patents.

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]
Loading…