Minoru Masuda

This inventor holds 76 USPTO granted patents and 3 published patent applications, plus 3 CIPO patents and 19 EPO patents, primarily in Electrophotographic Imaging. Top assignees: Ricoh Company, Ltd., Pfu Limited, Fujitsu Corporation. Active years: 1995-2025.

USPTO Granted Patents = 76 (Patent Applications = 3)

% Patents Active = 80.3

CIPO Patents = 3

EPO Patents = 19 (Patent Applications = 8)

Average Co-Inventor Count = 4.7

ph-index = 12

Forward Citations = 393(Granted Patents)

Forward Citations (Not Self Cited) = 324(Dec 10, 2025)

Location History:

Kahoku-gun, JP (1996 - 1997)
Suntoh-gun, JP (1998)
Numadu, JP (2004)
Tsubata-machi, JP (2002 - 2008)
Inagi, JP (2009)
Kahoku, JP (1996 - 2011)
Ishikawa, JP (1995 - 2012)
Numazu, JP (2004 - 2014)
Shizuoka-ken, JP (2015)
Osaka, JP (2014 - 2019)
Shizuoka, JP (2004 - 2024)

Company Filing History:

where one patent can have more than one assignee

Years Active: 1995-2025

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Areas of Expertise:

Electrophotographic Image

Toner

Image Forming Apparatus

Developer

Process Cartridge

Particulate Material

Droplet Ejector

Fine Particles

Electrostatic Charge

Cutter Knife

Two-Component Developer

Cleaning Method

76 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12436479 - Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridge (2025-10-07),

2. 12379678 - Carrier for forming electrophotographic image, developer, image forming method, image forming apparatus, and process cartridge (2025-08-05),

3. 12372893 - Carrier, developer, image forming method, and process cartridge (2025-07-29),

4. 12147192 - Carrier for developing electrostatic latent image, two-component developer, image forming apparatus, process cartridge, and image forming method (2024-11-19),

5. 11934145 - Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus (2024-03-19),

6. 11687013 - Toner for electrostatic charge image development, toner stored unit, image forming apparatus, and image forming method (2023-06-27),

7. 11635711 - Image forming method and image forming apparatus (2023-04-25),

8. 11061343 - Toner, toner stored unit, and image forming apparatus (2021-07-13),

9. 10895816 - Image forming apparatus and toner set (2021-01-19),

10. 10712681 - Toner, toner storage unit, image forming apparatus, and method for manufacturing toner (2020-07-14),

11. D847605 - Cutter knife (2019-05-07),

12. 10279489 - Full metal cutter knife (2019-05-07),

13. 10268131 - Cleaner for cleaning droplet ejector, and particulate material production apparatus using the cleaner (2019-04-23),

14. 10126678 - Toner, toner housing unit, image forming apparatus, and image forming method (2018-11-13),

15. 9964873 - Toner, developer, image forming apparatus and toner housing unit (2018-05-08),

Title: The Innovative Journey of Minoru Masuda

Introduction: Minoru Masuda, a distinguished inventor hailing from Shizuoka, Japan, has made significant contributions to the field of technology through his groundbreaking innovations.

Latest Patents: Minoru Masuda's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to driving progress in these critical areas.

Career Highlights: With a career spanning over two decades, Minoru Masuda has established himself as a visionary inventor with a keen eye for identifying and solving complex technological challenges. His work has not only earned him recognition within the industry but has also positively impacted society as a whole.

Collaborations: Throughout his career, Minoru Masuda has collaborated with leading research institutions, universities, and tech companies to further his innovative projects. These collaborations have not only accelerated the development process but have also fostered a culture of knowledge sharing and innovation.

Conclusion: In conclusion, Minoru Masuda's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his position as a trailblazer in the field of inventions. His work continues to inspire future generations of inventors to think boldly and create solutions that shape a better tomorrow.