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For the Inventor, By the Inventor

Tokyo, Japan

Kazuhiro Ito

This inventor holds 47 USPTO granted patents and 14 published patent applications and 4 EPO patents, primarily in Optoelectronics. Top assignees: Hitachi, Ltd., Asahi Glass Company, Limited, Denka Company Limited. Active years: 1976-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiro Ito. Retrieved from https://idiyas.com/inventor/kazuhiro-ito-6ivh32sc

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

USPTO Granted Patents = 47 

% Patents Active = 89.4

 

Average Co-Inventor Count = 4.1

ph-index = 8

Forward Citations = 191(Granted Patents)


Location History:

  • Tokyo, JA (1976 - 1977)
  • Hachioji, JA (1977)
  • Hinode, JA (1977)
  • Nishitama, JP (1989)
  • Hinode, JP (2003 - 2010)
  • Machida, JP (2015)
  • Yokohama, JP (2009 - 2019)
  • Tokyo, JP (1978 - 2023)
  • Chiyoda-ku, JP (2016 - 2024)

Company Filing History:

goldMedal15 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal8 out of 2,560 
 
Asahi Glass Company, Limited
 patents
bronzeMedal7 out of 388 
 
Denka Company Limited
 patents
4. 5 out of 34,296 
 
Seiko Epson Corporation
 patents
5. 4 out of 1,329 
 
Japan Science and Technology Agency
 patents
6. 2 out of 475 
 
Denki Kagaku Kogyo Kabushiki Kaisha
 patents
7. 2 out of 36,718 
 
Nec Corporation
 patents
8. 2 out of 134 
 
Opnext Japan, Inc.
 patents
9. 2 out of 591 
 
Tokyo Institute of Technology
 patents
10. 1 out of 1,157 
 
Agc Inc.
 patents
11. 1 out of 182 
 
Hitachi Vlsi Engineering Corp.
 patents
12. 1 out of 53,276 
 
Kabushiki Kaisha Toshiba
 patents
13. 1 out of 16,618 
 
Mitsubishi Electric Corporation
 patents
where one patent can have more than one assignee

Years Active: 1976-2025

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Areas of Expertise:
Phosphor Plate
Light Emitting Device
Organic Electroluminescence
Thin Film
Photovoltaic Cell
Semiconductor Photodetector
Avalanche Photodiode
Mayenite Compound
Optoelectronic Device
Dielectric
Swing Diagnosis
Wavelength Tunable Laser
47 patents (USPTO):Explore Patents
1. 12428594 - Phosphor plate and light emitting device (2025-09-30),
2. 12310155 - Phosphor plate and light emitting device (2025-05-20),
3. 12284848 - Phosphor plate, light emitting device, and method for manufacturing phosphor plate (2025-04-21),
4. 12100529 - Metal oxide thin film, organic electroluminescence element including the thin film, solar cell, and thin film fabrication method (2024-09-24),
5. 11871590 - Thin film of metal oxide, organic electroluminescent device including thin film, photovoltaic cell including thin film, and manufacturing method of thin film (2024-01-09),
6. 11807791 - Phosphor plate and light emitting device using the same (2023-11-07),
7. 11094909 - Thin film of metal oxide, organic electroluminescent device including the thin film, photovoltaic cell including the thin film and organic photovoltaic cell including the thin film (2021-08-17),
8. 10962254 - Ventilation device (2021-03-30),
9. 10611956 - Phosphor, light emitting device, and method for producing phosphor (2020-04-07),
10. 10517512 - Swing diagnosis method, recording medium, swing diagnosis apparatus, and swing diagnosis system (2019-12-31),
11. 10354550 - Swing diagnosis apparatus, swing diagnosis system, swing diagnosis method, and recording medium (2019-07-16),
12. 10307656 - Swing diagnosis apparatus, swing diagnosis system, swing diagnosis method, and recording medium (2019-06-04),
13. 10286282 - Swing diagnosis method, recording medium, swing diagnosis apparatus, and swing diagnosis system (2019-05-14),
14. 10252136 - Swing diagnosis apparatus, swing diagnosis system, swing diagnosis method, and recording medium (2019-04-09),
15. 10249402 - C12A7 electride thin film fabrication method and C12A7 electride thin film (2019-04-02),

Title: Innovator Spotlight: Kazuhiro Ito

Introduction: Kazuhiro Ito, a prolific inventor based in Tokyo, JP, has made significant contributions to the field of technology with an impressive portfolio of 43 patents. His innovative work has focused on thin film technologies, organic electroluminescent devices, and photovoltaic cells.

Latest Patents: Ito's recent patents include a groundbreaking "Thin film of metal oxide" comprising zinc, tin, silicon, and oxygen, with specific compositions to enhance its properties. He also patented a "Phosphor plate and light emitting device" using unique materials that meet specific color coordinate criteria.

Career Highlights: Throughout his career, Kazuhiro Ito has worked with renowned companies such as Hitachi, Ltd., and Asahi Glass Company, Limited. His expertise in material science and thin film technologies has led to the successful development of cutting-edge products in collaboration with top industry players.

Collaborations: Ito has collaborated with talented individuals in his field, including coworkers Yuichi Ono and Satoru Watanabe. Together, they have pushed the boundaries of innovation and played a significant role in advancing technology in the global market.

Conclusion: Kazuhiro Ito's relentless pursuit of innovation and his passion for creating transformative technologies have cemented his reputation as a respected inventor in the industry. His patents and collaborative efforts have not only shaped the present landscape of technology but also hold promise for the future of advancements in science and engineering.

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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