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For the Inventor, By the Inventor

Itami, Japan

Katsushi Akita

This inventor holds 90 USPTO granted patents and 17 published patent applications and 8 EPO patents, primarily in Semiconductor Technology (CPC class H01L31-035236). Top assignees: Sumitomo Electric Industries, Limited, Riken Corporation, Koha Co., Ltd.. Active years: 2001-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsushi Akita. Retrieved from https://idiyas.com/inventor/katsushi-akita

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

USPTO Granted Patents = 90 

% Patents Active = 52.2

 

Average Co-Inventor Count = 4.5

ph-index = 8

Forward Citations = 721(Granted Patents)

Forward Citations (Not Self Cited) = 694(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hyogo, JP (2001 - 2002)
  • Itami, JP (2006 - 2020)
  • Osaka, JP (2020)

Company Filing History:

goldMedal90 out of 10,647 
 
Sumitomo Electric Industries, Limited
 patents
silverMedal6 out of 892 
 
Riken Corporation
 patents
bronzeMedal3 out of 37 
 
Koha Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2001-2020

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Areas of Expertise:
Epitaxial Wafer
Light-Receiving Element
Nitride Semiconductor
Photodiode
Optical Sensor
Group III-V Semiconductors
Gallium Nitride
Laser Diode
Stacked Semiconductor
Hybrid Detection Device
Semiconductor Device
Layered Structure
90 patents (USPTO):Explore Patents
1. 10822722 - Gallium arsenide crystal body and gallium arsenide crystal substrate (2020-11-03),
2. 10714640 - Semiconductor stacked body, light-receiving element, and method for producing semiconductor stacked body (2020-07-14),
3. 10326034 - Semiconductor laminate and light-receiving element (2019-06-18),
4. 10158035 - Semiconductor stack, light-receiving device, and method for producing semiconductor stack (2018-12-18),
5. 9929301 - Semiconductor stack and semiconductor device (2018-03-27),
6. 9887310 - Semiconductor layered structure, method for producing semiconductor layered structure, and method for producing semiconductor device (2018-02-06),
7. 9818895 - Semiconductor device, optical sensor device and semiconductor device manufacturing method (2017-11-14),
8. 9773932 - Epitaxial wafer and method for manufacturing same (2017-09-26),
9. 9698287 - Epitaxial wafer, method for producing the same, semiconductor element, and optical sensor device (2017-07-04),
10. 9680040 - Semiconductor device and method for manufacturing the same (2017-06-13),
11. 9608148 - Semiconductor element and method for producing the same (2017-03-28),
12. 9281427 - Semiconductor device (2016-03-08),
13. 9190544 - Photodiode, optical sensor device, and photodiode manufacturing method (2015-11-17),
14. 9171978 - Epitaxial wafer, method for producing the same, photodiode, and optical sensor device (2015-10-27),
15. 9159853 - Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial wafer (2015-10-13),

Title: Katsushi Akita: Paving the Way for Semiconductor Innovations

Introduction:

In the vibrant world of semiconductor technology, Katsushi Akita shines as a prominent inventor and researcher. With a vast portfolio of 90 patents and a career spanning multiple high-profile companies and collaborations, Akita has made significant contributions to the field. Let's explore his latest patents, career highlights, and notable collaborations.

Latest Patents:

Akita's recent patents highlight his expertise in gallium arsenide crystal body and gallium arsenide crystal substrate technologies. These inventions provide an enhanced understanding of etching pit density and oxygen concentration, improving the quality and performance of gallium arsenide crystal structures. In his semiconductor stacked body, he introduces a novel layer arrangement that optimizes carrier generation, leading to more efficient light-receiving elements.

Career Highlights:

Akita has garnered his expertise through his employment with renowned companies such as Sumitomo Electric Industries, Limited, and RIKEN Corporation. These respected organizations have afforded him the opportunity to work on cutting-edge projects and collaborate with industry professionals.

Collaborations:

Throughout his career, Akita has collaborated with talented individuals who share his passion for semiconductor innovation. Two notable coworkers include Takashi Kyono and Yusuke Yoshizumi, with whom Akita has worked closely to push the boundaries of semiconductor technology. These collaborations have undoubtedly contributed to his impressive patent portfolio and career achievements.

Conclusion:

Katsushi Akita's exceptional contributions to semiconductor technology have left an indelible mark on the industry. With a wealth of patents, expertise in gallium arsenide crystal structures, and collaborations with industry peers, he continues to shape the future of semiconductor innovations. As we eagerly anticipate his next breakthrough, Akita remains an inspirational figure in the field of semiconductor research and development.

(Note: The information provided about Katsushi Akita is fictional and created for illustrative purposes only.)

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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