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For the Inventor, By the Inventor

Kanagawa, Japan

Yoshio Ishii

This inventor holds 57 USPTO granted patents and 1 published patent application and 4 EPO patents, primarily in Silver Halide Photography (CPC class 4305). Top assignees: Fuji Photo Film Company, Limited, Fujifilm Corporation. Active years: 1990-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshio Ishii. Retrieved from https://idiyas.com/inventor/yoshio-ishii

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

USPTO Granted Patents = 57 

% Patents Active = 70.2


Average Co-Inventor Count = 3.4

ph-index = 10

Forward Citations = 326(Granted Patents)

Forward Citations (Not Self Cited) = 317(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ashigara, JP (2001 - 2008)
  • Kanagawa, JP (1990 - 2011)
  • Minami-ashigara, JP (1993 - 2011)
  • Fujinomiya, JP (2012 - 2014)
  • Shizuoka, JP (2015)
  • Ashigarakami-gun, JP (2021 - 2023)

Company Filing History:

goldMedal40 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents
silverMedal17 out of 16,980 
 
Fujifilm Corporation
 patents

Years Active: 1990-2023

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Areas of Expertise:
Silver Halide
Color Photosensitive Material
Image-Forming Method
Optical Device
Thermal Transfer
Heat-Sensitive Transfer
Photographic Material
Electrochromic Device
Functional Device
Density Changing Element
Liquid Crystal Display
Resin Film
57 patents (USPTO):Explore Patents
1. 11759998 - Method for producing gelatin formed body and gelatin formed body (2023-09-19),
2. 10953131 - Method for producing calcium phosphate molded article, calcium phosphate molded article, and material for transplantation (2021-03-23),
3. 9040129 - Protective film of polarizer, polarizer and method for producing it, and liquid crystal display device (2015-05-26),
4. 8859060 - Protective film of polarizer, polarizer and liquid crystal display device (2014-10-14),
5. 8394309 - Resin film and method for producing it, polarizer and liquid crystal display device (2013-03-12),
6. 8337962 - Resin film and method for producing it, polarizer and liquid crystal display device (2012-12-25),
7. 7932210 - Image-forming method using thermal transfer system (2011-04-26),
8. 7863219 - Heat-sensitive transfer image-receiving sheet and method for producing heat-sensitive transfer image-receiving sheet (2011-01-04),
9. 7858556 - Heat-sensitive transfer image-receiving sheet (2010-12-28),
10. 7816064 - Image-forming method using heat-sensitive transfer system (2010-10-19),
11. 7485402 - Heat-sensitive transfer image-receiving sheet and method for producing heat-sensitive transfer image-receiving sheet (2009-02-03),
12. 7474453 - Control apparatus for optical density changing element (2009-01-06),
13. 7446923 - Semiconductor, functional device, electrochromic device, optical device, and image-taking unit (2008-11-04),
14. 7419314 - Optical density changing element, optical element and photographing unit (2008-09-02),
15. 7384731 - Method for forming color image and silver halide color photosensitive material used for the same (2008-06-10),

Title: Yoshio Ishii - Innovative Inventor from Kanagawa, Japan

Introduction: Yoshio Ishii is a renowned inventor hailing from Kanagawa, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Yoshio Ishii holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to innovation.

Career Highlights: Throughout his illustrious career, Yoshio Ishii has worked with leading research institutions and tech companies, spearheading projects that have revolutionized the way we interact with technology on a daily basis.

Collaborations: Ishii has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of creativity and excellence in all his projects. His ability to work in diverse teams has led to the development of cutting-edge solutions that have had a lasting impact on society.

Conclusion: Yoshio Ishii's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor in the global tech community. His work continues to inspire future generations of inventors to push the boundaries of what is possible in the world 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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