Tokyo, Japan

Yoshihiro Hayashi

This inventor holds 185 USPTO granted patents and 15 published patent applications and 8 EPO patents, primarily in Ultrasonic Technology (CPC class H01L27-1225). Top assignees: Renesas Electronics Corporation, Nec Corporation, Riso Kagaku Corporation. Active years: 1991-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiro Hayashi. Retrieved from https://idiyas.com/inventor/yoshihiro-hayashi

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

Calculating rank
USPTO Granted Patents = 185 

% Patents Active = 70.8

 

Average Co-Inventor Count = 2.7

ph-index = 20

Forward Citations = 2,072(Granted Patents)

Forward Citations (Not Self Cited) = 1,984(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Inashiki-gun, JP (1998 - 2000)
  • Amimachi, JP (1997 - 2004)
  • Ibaraki-ken, JP (1998 - 2009)
  • Sagamihara, JP (1999 - 2009)
  • Akishima, JP (2011)
  • Odawara, JP (2010 - 2012)
  • Minato-ku, JP (2006 - 2013)
  • Kawasaki, JP (2012 - 2016)
  • Kanagawa, JP (2011 - 2019)
  • Kashiwa, JP (2023)
  • Chiba, JP (2023)
  • Tokyo, JP (1991 - 2024)

Company Filing History:

goldMedal68 out of 7,661 
 
Renesas Electronics Corporation
 patents
silverMedal54 out of 36,770 
 
Nec Corporation
 patents
bronzeMedal15 out of 1,087 
 
Riso Kagaku Corporation
 patents
4. 10 out of 308 
 
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
 patents
5. 8 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
6. 7 out of 42,752 
 
Hitachi, Ltd.
 patents
7. 5 out of 2,571 
 
Hoya Corporation
 patents
8. 4 out of 17,024 
 
Fujifilm Corporation
 patents
9. 4 out of 119 
 
Fujifilm Healthcare Corporation
 patents
10. 4 out of 346 
 
Nof Corporation
 patents
11. 3 out of 4,756 
 
Mitsubishi Heavy Industries Limited
 patents
12. 1 out of 11 
 
Clevo Co.
 patents
13. 1 out of 1,087 
 
Henkel Corporation
 patents
14. 1 out of 321 
 
Kurita Water Industries Ltd.
 patents
15. 1 out of 196 
 
Nec C Orporation
 patents
16. 1 out of 2,467 
 
Nec Electronics Corporation
 patents
17. 1 out of 9,002 
 
Nikon Corporation
 patents
18. 1 out of 10,947 
 
Tokyo Electron Limited
 patents
19. 2 out of 834,659 
Other
 patents
where one patent can have more than one assignee

Years Active: 1991-2026

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Areas of Expertise:
Ultrasonic Probe
Endoscope System
Imaging Device
Ultrasound Diagnostic
Centrifugal Compressor
Turbocharger
Semiconductor Device
Wireless Communication
185 patents (USPTO):Explore Patents

Title: Yoshihiro Hayashi: Tokyo's Innovator With 144 Patents

Introduction:

Yoshihiro Hayashi, a brilliant inventor based in Tokyo, Japan, has made significant contributions to the field of innovations and patents. With an impressive collection of 144 patents to his name, Hayashi has proven his expertise in various technological domains. His latest patents, including a compressor and turbocharger system, and a versatile ultrasound probe, highlight his commitment to pushing the boundaries of technological advancements. Let us delve into the career highlights of this inventive genius and explore his notable collaborations.

Latest Patents:

One of Yoshihiro Hayashi's recent patents is a compressor and turbocharger, which features a bypass passage connecting the impeller and scroll passage within the housing. The addition of a bypass valve allows for efficient gas routing, maximizing the overall performance of the system. This innovation has the potential to enhance the efficiency and reliability of compressor technologies used in various applications.

Another noteworthy patent is Hayashi's design for a two-dimensional array ultrasound probe. This probe enables ultrasound reception operation in both continuous wave Doppler mode (C mode) and imaging mode (B mode). The incorporation of a reception circuit and multiplexers enhances the probe's versatility, making it suitable for a wide range of ultrasound applications.

Career Highlights:

Throughout his career, Yoshihiro Hayashi has worked with esteemed companies such as NEC Corporation and Renesas Electronics Corporation. During his tenure at these organizations, Hayashi has made seminal contributions to their research and development initiatives. His accomplishments and technical expertise have undoubtedly played a significant role in advancing these companies' technological portfolios.

Collaborations:

Collaboration has been fundamental to Yoshihiro Hayashi's success as an inventor. He has worked closely with talented individuals, including renowned coworkers Hajime Yamagami and Kouichi Terada. Such collaborations often fuel innovation by fostering a diverse exchange of ideas and pooling together the collective expertise of talented professionals.

Conclusion:

Yoshihiro Hayashi, with his exceptional inventiveness and prolific patent portfolio, stands out as one of Tokyo's leading innovators. His recent patents on compressor and turbocharger systems, along with a versatile ultrasound probe, demonstrate his commitment to improving technological solutions across various industries. Hayashi's collaborations with industry giants such as NEC Corporation and Renesas Electronics Corporation further solidify his reputation as a visionary inventor. As we continue to witness his contributions to the world of innovations and patents, it remains evident that Hayashi's remarkable talents and relentless pursuit of excellence will continue to shape the future of 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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