Tokyo, Japan

Hiroyuki Ito

This inventor holds 78 USPTO granted patents and 8 published patent applications and 5 EPO patents, primarily in Charged Particle Beam Technology (CPC class H01J). Top assignees: Hitachi-High-Technologies Corporation, Hitachi Metals, Ltd., Hitachi, Ltd.. Active years: 1986-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Ito. Retrieved from https://idiyas.com/inventor/hiroyuki-ito-nne1p6cl

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 = 66.7

 

Average Co-Inventor Count = 3.1

ph-index = 10

Forward Citations = 588(Granted Patents)

Forward Citations (Not Self Cited) = 580(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kokubunji, JP (1986)
  • Katsuta, JP (1988)
  • Kuwana, JP (1991)
  • Ibaraki, JP (1996 - 1998)
  • Hithachinaka, JP (2004)
  • Hitachinaka, JP (2000 - 2013)
  • Tottori, JP (2012 - 2015)
  • Hitachi, JP (2005 - 2016)
  • Numazu, JP (2016)
  • Mishima-gun, JP (2017)
  • Mie, JP (2019)
  • Kasama, JP (2016 - 2020)
  • Tokyo, JP (1991 - 2023)

Company Filing History:

goldMedal18 out of 2,874 
 
Hitachi-High-Technologies Corporation
 patents
silverMedal17 out of 2,333 
 
Hitachi Metals, Ltd.
 patents
bronzeMedal14 out of 42,743 
 
Hitachi, Ltd.
 patents
4. 7 out of 58,148 
 
Sony Corporation
 patents
5. 3 out of 836 
 
Hitachi Cable, Inc.
 patents
6. 3 out of 907 
 
Honda Motor Ltd., Ltd.
 patents
7. 3 out of 81 
 
Taisei Corporation
 patents
8. 2 out of 1,398 
 
Hitachi High-Tech Corporation
 patents
9. 2 out of 136 
 
Hitachi Plant Technologies, Ltd.
 patents
10. 2 out of 5,803 
 
Japan Display Inc.
 patents
11. 2 out of 191 
 
Japan Display West Inc.
 patents
12. 2 out of 1,445 
 
Stanley Electric Co., Ltd
 patents
13. 2 out of 10,933 
 
Tokyo Electron Limited
 patents
14. 2 out of 329 
 
Yamanouchi Pharmaceutical Company Ltd.
 patents
15. 1 out of 306 
 
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
 patents
16. 1 out of 305 
 
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
 patents
17. 1 out of 471 
 
National Institute of Information and Communications Technology, Incorporated
 patents
18. 1 out of 592 
 
Tokyo Institute of Technology
 patents
19. 1 out of 3 
 
W & Co.
 patents
where one patent can have more than one assignee

Years Active: 1986-2026

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Areas of Expertise:
Charged Particle Beam
Semiconductor Device
Mass Flow Controller
Energy Filter
Exhaust Gas Treatment
Composite Cable
Liquid Crystal Display
Scanning Electron Microscope
Synthesis of Acrolein
Thermal Mass Flow Meter
Vehicle Battery Charger
Sensor Device
78 patents (USPTO):Explore Patents

Title: Innovations and Contributions of Hiroyuki Ito

Introduction: Hiroyuki Ito, an acclaimed inventor based in Tokyo, Japan, holds an impressive portfolio with a total of 72 patents. His innovative work spans various fields, showcasing his dedication to advancing technology and improving existing systems.

Latest Patents: Among his most recent inventions is an atomic resonator designed to achieve resonance frequency through CPT resonance. This device comprises a gas cell filled with alkali metal atoms, a photodetector to convert light passing through the gas cell into an electric signal, a high-frequency oscillator that processes this signal, and a laser light source that modulates light based on the signal output from the oscillator. Notably, the oscillator features an injection-locked frequency divider circuit that employs an acoustic resonator as an oscillation element.

Another significant innovation by Ito is the charged particle beam generator and apparatus. This technology aims to enhance insulation reliability by minimizing the high electric field around the connection section for a conductor. It consists of a plug that transfers high voltage to a charged particle source in a vacuum, along with a socket that houses the charged particle source. An electric field reduction ring, which connects electrically to one of multiple conductors guiding high voltage, is placed at the tip of the plug, strategically arranged to penetrate the reduction ring for increased efficiency.

Career Highlights: During his professional journey, Hiroyuki Ito has worked with notable companies such as Hitachi High-Technologies Corporation and Hitachi Metals Ltd. His extensive experience in these prestigious organizations has significantly contributed to his expertise and understanding in the field of invention and innovation.

Collaborations: Throughout his career, Ito has collaborated with talented colleagues, including Yasunari Sohda and Yoshinori Nakayama. These partnerships have fostered a collaborative environment, enhancing the development of groundbreaking technologies and inventions.

Conclusion: Hiroyuki Ito's impressive list of patents and innovative creations reflect his commitment to pushing the boundaries of technology. His work continues to influence various industries, underscoring the importance of innovation in driving progress and providing solutions to complex challenges.

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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