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For the Inventor, By the Inventor

Tokyo, Japan

Kazuhiko Takahashi

This inventor holds 78 USPTO granted patents and 5 published patent applications and 29 EPO patents, primarily in Rotating Machinery. Top assignees: Hitachi, Ltd., Olympus Corporation, Oki Electric Industry Co., Ltd.. Active years: 1994-2023.

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

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

Calculating rank
USPTO Granted Patents = 78 

% Patents Active = 70.5

 

Average Co-Inventor Count = 2.6

ph-index = 9

Forward Citations = 323(Granted Patents)

Forward Citations (Not Self Cited) = 307(Dec 10, 2025)


Location History:

  • Kanagawa-ken, JP (1996)
  • Ichikawa, JP (2004 - 2006)
  • Hitachi, JP (2001 - 2015)
  • Chiba, JP (2018 - 2019)
  • Hachioji, JP (2005 - 2021)
  • Yokohama, JP (2009 - 2021)
  • Chiyoda-ku, JP (2020 - 2022)
  • Tokyo, JP (1994 - 2023)

Company Filing History:

goldMedal21 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal15 out of 8,307 
 
Olympus Corporation
 patents
bronzeMedal11 out of 4,980 
 
Oki Electric Industry Co., Ltd.
 patents
4. 9 out of 1,268 
 
Olympus Medical Systems Corporation
 patents
5. 7 out of 4,953 
 
Ntt Docomo, Inc.
 patents
6. 5 out of 342 
 
Nisshin Steel Co., Ltd.
 patents
7. 3 out of 651 
 
Mitsubishi Hitachi Power Systems, Ltd.
 patents
8. 2 out of 13,420 
 
Nissan Motor Company Limited
 patents
9. 2 out of 592 
 
Tokyo Institute of Technology
 patents
10. 1 out of 3 
 
Docomo, Inc.
 patents
11. 1 out of 1 
 
Fusho Ishii
 patent
12. 1 out of 149 
 
Hitachi Powdered Metals Co., Ltd.
 patents
13. 1 out of 53,286 
 
Kabushiki Kaisha Toshiba
 patents
14. 1 out of 4,753 
 
Mitsubishi Heavy Industries Limited
 patents
15. 1 out of 221 
 
Mitsubishi Power, Ltd.
 patents
16. 1 out of 45 
 
Nippon Steel Nisshin Co., Ltd.
 patents
17. 5 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1994-2023

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Areas of Expertise:
Rotary Electric Machine
Three-Phase Armature
Optics
Wearable Display
Endoscope System
Medical Device
Blur Compensation
Fourier Optics
Temperature Sensor
Illuminator
Calibration Apparatus
Surgical Apparatus
78 patents (USPTO):Explore Patents
1. 11699933 - Rotary electric machine with two-pole rotor and three-phase armature winding (2023-07-11),
2. 11428948 - Blur compensation system (2022-08-30),
3. 11231529 - Light source for projection display (2022-01-25),
4. 11209586 - Ghost image elimination of doe using fourier optics method (2021-12-28),
5. 11073694 - Optics of wearable display using laser beam scanner (2021-07-27),
6. 11061224 - Optics of wearable display to increase eye-box (2021-07-13),
7. 11018542 - Rotating machinery with three-phase armature windings and first and second parallel windings (2021-05-25),
8. 10939037 - Capsule endoscope, receiving device, operation method of capsule endoscope, and computer readable recording medium (2021-03-02),
9. 10582154 - Picture presentation system (2020-03-03),
10. 10539798 - Optics of wearable display devices (2020-01-21),
11. 10386563 - Illuminator for a wearable display (2019-08-20),
12. 10378111 - Coated metal sheet, method for manufacturing same, and exterior building material (2019-08-13),
13. 10193406 - Rotating machinery (2019-01-29),
14. 10174426 - Coated metal sheet, method for manufacturing same, and exterior building material (2019-01-08),
15. 10090722 - Rotating machinery with three-phase armature windings and first and second parallel windings (2018-10-02),

Title: Kazuhiko Takahashi: Innovator in Rotary Electric Machines and Blur Compensation Systems

Introduction

Kazuhiko Takahashi, a brilliant inventor based in Tokyo, Japan, has made significant contributions to the field of electrical engineering with an impressive portfolio of 21 patents. His innovative designs reflect a deep understanding of rotary electric machines and advanced optical systems.

Latest Patents

Among his latest inventions, Takahashi's patent for a rotary electric machine with a two-pole rotor and three-phase armature winding stands out. This design integrates a stator core with fifty-four slots, housing an armature winding configured in two layers comprising top and bottom coil pieces. The winding features three parallel circuits and two phase belts per phase. His unique sequence arrangement in both coil pieces enhances the efficiency and performance of the machine. Another notable invention is the blur compensation system, which employs sophisticated mirrors and lenses to accurately redirect light of specific wavelengths, thereby improving image clarity and focus.

Career Highlights

Throughout his career, Takahashi has worked with prominent companies such as Oki Electric Industry Co., Ltd. and NTT Docomo, Inc. His professional journey with these organizations has allowed him to refine his expertise in developing groundbreaking technologies that pave the way for advancements in electrical machines and optical systems.

Collaborations

In his pursuit of innovation, Takahashi has collaborated with talented professionals in the field, including esteemed coworkers Yuji Aburakawa and Fusao Ishii. Their collective knowledge and diverse skill sets have contributed greatly to the success of their projects and patents.

Conclusion

Kazuhiko Takahashi is a prolific inventor whose work has significantly impacted the electrical engineering domain through his inventive patents and collaborations. With a commitment to innovation, he continues to shape the future of technology in Japan and beyond.

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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